1 | /* Definitions of floating-point access for GNU compiler. |
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2 | Copyright (C) 1989, 1991, 1994, 1996, 1997 Free Software Foundation, Inc. |
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3 | |
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4 | This file is part of GNU CC. |
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5 | |
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6 | GNU CC is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | GNU CC is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | GNU General Public License for more details. |
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15 | |
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16 | You should have received a copy of the GNU General Public License |
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17 | along with GNU CC; see the file COPYING. If not, write to |
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18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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19 | Boston, MA 02111-1307, USA. */ |
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20 | |
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21 | #ifndef REAL_H_INCLUDED |
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22 | #define REAL_H_INCLUDED |
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23 | |
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24 | /* Define codes for all the float formats that we know of. */ |
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25 | #define UNKNOWN_FLOAT_FORMAT 0 |
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26 | #define IEEE_FLOAT_FORMAT 1 |
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27 | #define VAX_FLOAT_FORMAT 2 |
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28 | #define IBM_FLOAT_FORMAT 3 |
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29 | |
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30 | /* Default to IEEE float if not specified. Nearly all machines use it. */ |
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31 | |
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32 | #ifndef TARGET_FLOAT_FORMAT |
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33 | #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT |
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34 | #endif |
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35 | |
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36 | #ifndef HOST_FLOAT_FORMAT |
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37 | #define HOST_FLOAT_FORMAT IEEE_FLOAT_FORMAT |
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38 | #endif |
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39 | |
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40 | #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT |
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41 | #define REAL_INFINITY |
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42 | #endif |
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43 | |
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44 | /* If FLOAT_WORDS_BIG_ENDIAN and HOST_FLOAT_WORDS_BIG_ENDIAN are not defined |
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45 | in the header files, then this implies the word-endianness is the same as |
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46 | for integers. */ |
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47 | |
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48 | /* This is defined 0 or 1, like WORDS_BIG_ENDIAN. */ |
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49 | #ifndef FLOAT_WORDS_BIG_ENDIAN |
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50 | #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN |
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51 | #endif |
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52 | |
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53 | /* This is defined 0 or 1, unlike HOST_WORDS_BIG_ENDIAN. */ |
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54 | #ifndef HOST_FLOAT_WORDS_BIG_ENDIAN |
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55 | #ifdef HOST_WORDS_BIG_ENDIAN |
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56 | #define HOST_FLOAT_WORDS_BIG_ENDIAN 1 |
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57 | #else |
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58 | #define HOST_FLOAT_WORDS_BIG_ENDIAN 0 |
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59 | #endif |
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60 | #endif |
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61 | |
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62 | /* Defining REAL_ARITHMETIC invokes a floating point emulator |
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63 | that can produce a target machine format differing by more |
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64 | than just endian-ness from the host's format. The emulator |
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65 | is also used to support extended real XFmode. */ |
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66 | #ifndef LONG_DOUBLE_TYPE_SIZE |
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67 | #define LONG_DOUBLE_TYPE_SIZE 64 |
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68 | #endif |
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69 | #if (LONG_DOUBLE_TYPE_SIZE == 96) || (LONG_DOUBLE_TYPE_SIZE == 128) |
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70 | #ifndef REAL_ARITHMETIC |
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71 | #define REAL_ARITHMETIC |
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72 | #endif |
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73 | #endif |
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74 | #ifdef REAL_ARITHMETIC |
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75 | /* **** Start of software floating point emulator interface macros **** */ |
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76 | |
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77 | /* Support 80-bit extended real XFmode if LONG_DOUBLE_TYPE_SIZE |
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78 | has been defined to be 96 in the tm.h machine file. */ |
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79 | #if (LONG_DOUBLE_TYPE_SIZE == 96) |
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80 | #define REAL_IS_NOT_DOUBLE |
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81 | #define REAL_ARITHMETIC |
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82 | typedef struct { |
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83 | HOST_WIDE_INT r[(11 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))]; |
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84 | } realvaluetype; |
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85 | #define REAL_VALUE_TYPE realvaluetype |
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86 | |
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87 | #else /* no XFmode support */ |
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88 | |
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89 | #if (LONG_DOUBLE_TYPE_SIZE == 128) |
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90 | |
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91 | #define REAL_IS_NOT_DOUBLE |
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92 | #define REAL_ARITHMETIC |
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93 | typedef struct { |
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94 | HOST_WIDE_INT r[(19 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))]; |
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95 | } realvaluetype; |
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96 | #define REAL_VALUE_TYPE realvaluetype |
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97 | |
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98 | #else /* not TFmode */ |
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99 | |
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100 | #if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT |
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101 | /* If no XFmode support, then a REAL_VALUE_TYPE is 64 bits wide |
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102 | but it is not necessarily a host machine double. */ |
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103 | #define REAL_IS_NOT_DOUBLE |
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104 | typedef struct { |
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105 | HOST_WIDE_INT r[(7 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))]; |
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106 | } realvaluetype; |
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107 | #define REAL_VALUE_TYPE realvaluetype |
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108 | #else |
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109 | /* If host and target formats are compatible, then a REAL_VALUE_TYPE |
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110 | is actually a host machine double. */ |
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111 | #define REAL_VALUE_TYPE double |
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112 | #endif |
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113 | |
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114 | #endif /* no TFmode support */ |
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115 | #endif /* no XFmode support */ |
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116 | |
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117 | extern int significand_size PROTO((enum machine_mode)); |
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118 | |
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119 | /* If emulation has been enabled by defining REAL_ARITHMETIC or by |
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120 | setting LONG_DOUBLE_TYPE_SIZE to 96 or 128, then define macros so that |
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121 | they invoke emulator functions. This will succeed only if the machine |
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122 | files have been updated to use these macros in place of any |
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123 | references to host machine `double' or `float' types. */ |
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124 | #ifdef REAL_ARITHMETIC |
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125 | #undef REAL_ARITHMETIC |
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126 | #define REAL_ARITHMETIC(value, code, d1, d2) \ |
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127 | earith (&(value), (code), &(d1), &(d2)) |
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128 | |
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129 | /* Declare functions in real.c. */ |
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130 | extern void earith PROTO((REAL_VALUE_TYPE *, int, |
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131 | REAL_VALUE_TYPE *, REAL_VALUE_TYPE *)); |
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132 | extern REAL_VALUE_TYPE etrunci PROTO((REAL_VALUE_TYPE)); |
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133 | extern REAL_VALUE_TYPE etruncui PROTO((REAL_VALUE_TYPE)); |
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134 | extern REAL_VALUE_TYPE ereal_atof PROTO((char *, enum machine_mode)); |
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135 | extern REAL_VALUE_TYPE ereal_negate PROTO((REAL_VALUE_TYPE)); |
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136 | extern HOST_WIDE_INT efixi PROTO((REAL_VALUE_TYPE)); |
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137 | extern unsigned HOST_WIDE_INT efixui PROTO((REAL_VALUE_TYPE)); |
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138 | extern void ereal_from_int PROTO((REAL_VALUE_TYPE *, |
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139 | HOST_WIDE_INT, HOST_WIDE_INT, |
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140 | enum machine_mode)); |
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141 | extern void ereal_from_uint PROTO((REAL_VALUE_TYPE *, |
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142 | unsigned HOST_WIDE_INT, |
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143 | unsigned HOST_WIDE_INT, |
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144 | enum machine_mode)); |
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145 | extern void ereal_to_int PROTO((HOST_WIDE_INT *, HOST_WIDE_INT *, |
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146 | REAL_VALUE_TYPE)); |
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147 | extern REAL_VALUE_TYPE ereal_ldexp PROTO((REAL_VALUE_TYPE, int)); |
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148 | |
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149 | extern void etartdouble PROTO((REAL_VALUE_TYPE, long *)); |
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150 | extern void etarldouble PROTO((REAL_VALUE_TYPE, long *)); |
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151 | extern void etardouble PROTO((REAL_VALUE_TYPE, long *)); |
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152 | extern long etarsingle PROTO((REAL_VALUE_TYPE)); |
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153 | extern void ereal_to_decimal PROTO((REAL_VALUE_TYPE, char *)); |
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154 | extern int ereal_cmp PROTO((REAL_VALUE_TYPE, REAL_VALUE_TYPE)); |
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155 | extern int ereal_isneg PROTO((REAL_VALUE_TYPE)); |
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156 | extern REAL_VALUE_TYPE ereal_from_float PROTO((HOST_WIDE_INT)); |
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157 | extern REAL_VALUE_TYPE ereal_from_double PROTO((HOST_WIDE_INT *)); |
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158 | |
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159 | #define REAL_VALUES_EQUAL(x, y) (ereal_cmp ((x), (y)) == 0) |
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160 | /* true if x < y : */ |
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161 | #define REAL_VALUES_LESS(x, y) (ereal_cmp ((x), (y)) == -1) |
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162 | #define REAL_VALUE_LDEXP(x, n) ereal_ldexp (x, n) |
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163 | |
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164 | /* These return REAL_VALUE_TYPE: */ |
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165 | #define REAL_VALUE_RNDZINT(x) (etrunci (x)) |
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166 | #define REAL_VALUE_UNSIGNED_RNDZINT(x) (etruncui (x)) |
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167 | extern REAL_VALUE_TYPE real_value_truncate (); |
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168 | #define REAL_VALUE_TRUNCATE(mode, x) real_value_truncate (mode, x) |
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169 | |
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170 | /* These return HOST_WIDE_INT: */ |
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171 | /* Convert a floating-point value to integer, rounding toward zero. */ |
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172 | #define REAL_VALUE_FIX(x) (efixi (x)) |
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173 | /* Convert a floating-point value to unsigned integer, rounding |
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174 | toward zero. */ |
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175 | #define REAL_VALUE_UNSIGNED_FIX(x) (efixui (x)) |
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176 | |
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177 | #define REAL_VALUE_ATOF ereal_atof |
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178 | #define REAL_VALUE_NEGATE ereal_negate |
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179 | |
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180 | #define REAL_VALUE_MINUS_ZERO(x) \ |
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181 | ((ereal_cmp (x, dconst0) == 0) && (ereal_isneg (x) != 0 )) |
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182 | |
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183 | #define REAL_VALUE_TO_INT ereal_to_int |
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184 | |
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185 | /* Here the cast to HOST_WIDE_INT sign-extends arguments such as ~0. */ |
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186 | #define REAL_VALUE_FROM_INT(d, lo, hi, mode) \ |
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187 | ereal_from_int (&d, (HOST_WIDE_INT) (lo), (HOST_WIDE_INT) (hi), mode) |
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188 | |
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189 | #define REAL_VALUE_FROM_UNSIGNED_INT(d, lo, hi, mode) \ |
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190 | ereal_from_uint (&d, lo, hi, mode) |
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191 | |
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192 | /* IN is a REAL_VALUE_TYPE. OUT is an array of longs. */ |
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193 | #if LONG_DOUBLE_TYPE_SIZE == 96 |
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194 | #define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etarldouble ((IN), (OUT))) |
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195 | #else |
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196 | #define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etartdouble ((IN), (OUT))) |
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197 | #endif |
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198 | #define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) (etardouble ((IN), (OUT))) |
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199 | |
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200 | /* IN is a REAL_VALUE_TYPE. OUT is a long. */ |
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201 | #define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) ((OUT) = etarsingle ((IN))) |
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202 | |
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203 | /* d is an array of HOST_WIDE_INT that holds a double precision |
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204 | value in the target computer's floating point format. */ |
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205 | #define REAL_VALUE_FROM_TARGET_DOUBLE(d) (ereal_from_double (d)) |
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206 | |
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207 | /* f is a HOST_WIDE_INT containing a single precision target float value. */ |
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208 | #define REAL_VALUE_FROM_TARGET_SINGLE(f) (ereal_from_float (f)) |
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209 | |
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210 | /* Conversions to decimal ASCII string. */ |
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211 | #define REAL_VALUE_TO_DECIMAL(r, fmt, s) (ereal_to_decimal (r, s)) |
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212 | |
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213 | #endif /* REAL_ARITHMETIC defined */ |
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214 | |
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215 | /* **** End of software floating point emulator interface macros **** */ |
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216 | #else /* No XFmode or TFmode and REAL_ARITHMETIC not defined */ |
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217 | |
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218 | /* old interface */ |
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219 | #ifdef REAL_ARITHMETIC |
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220 | /* Defining REAL_IS_NOT_DOUBLE breaks certain initializations |
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221 | when REAL_ARITHMETIC etc. are not defined. */ |
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222 | |
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223 | /* Now see if the host and target machines use the same format. |
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224 | If not, define REAL_IS_NOT_DOUBLE (even if we end up representing |
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225 | reals as doubles because we have no better way in this cross compiler.) |
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226 | This turns off various optimizations that can happen when we know the |
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227 | compiler's float format matches the target's float format. |
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228 | */ |
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229 | #if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT |
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230 | #define REAL_IS_NOT_DOUBLE |
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231 | #ifndef REAL_VALUE_TYPE |
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232 | typedef struct { |
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233 | HOST_WIDE_INT r[sizeof (double)/sizeof (HOST_WIDE_INT)]; |
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234 | } realvaluetype; |
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235 | #define REAL_VALUE_TYPE realvaluetype |
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236 | #endif /* no REAL_VALUE_TYPE */ |
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237 | #endif /* formats differ */ |
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238 | #endif /* 0 */ |
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239 | |
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240 | #endif /* emulator not used */ |
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241 | |
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242 | /* If we are not cross-compiling, use a `double' to represent the |
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243 | floating-point value. Otherwise, use some other type |
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244 | (probably a struct containing an array of longs). */ |
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245 | #ifndef REAL_VALUE_TYPE |
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246 | #define REAL_VALUE_TYPE double |
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247 | #else |
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248 | #define REAL_IS_NOT_DOUBLE |
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249 | #endif |
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250 | |
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251 | #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT |
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252 | |
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253 | /* Convert a type `double' value in host format first to a type `float' |
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254 | value in host format and then to a single type `long' value which |
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255 | is the bitwise equivalent of the `float' value. */ |
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256 | #ifndef REAL_VALUE_TO_TARGET_SINGLE |
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257 | #define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) \ |
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258 | do { float f = (float) (IN); \ |
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259 | (OUT) = *(long *) &f; \ |
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260 | } while (0) |
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261 | #endif |
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262 | |
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263 | /* Convert a type `double' value in host format to a pair of type `long' |
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264 | values which is its bitwise equivalent, but put the two words into |
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265 | proper word order for the target. */ |
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266 | #ifndef REAL_VALUE_TO_TARGET_DOUBLE |
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267 | #define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \ |
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268 | do { REAL_VALUE_TYPE in = (IN); /* Make sure it's not in a register. */\ |
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269 | if (HOST_FLOAT_WORDS_BIG_ENDIAN == FLOAT_WORDS_BIG_ENDIAN) \ |
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270 | { \ |
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271 | (OUT)[0] = ((long *) &in)[0]; \ |
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272 | (OUT)[1] = ((long *) &in)[1]; \ |
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273 | } \ |
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274 | else \ |
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275 | { \ |
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276 | (OUT)[1] = ((long *) &in)[0]; \ |
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277 | (OUT)[0] = ((long *) &in)[1]; \ |
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278 | } \ |
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279 | } while (0) |
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280 | #endif |
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281 | #endif /* HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT */ |
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282 | |
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283 | /* In this configuration, double and long double are the same. */ |
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284 | #ifndef REAL_VALUE_TO_TARGET_LONG_DOUBLE |
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285 | #define REAL_VALUE_TO_TARGET_LONG_DOUBLE(a, b) REAL_VALUE_TO_TARGET_DOUBLE (a, b) |
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286 | #endif |
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287 | |
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288 | /* Compare two floating-point objects for bitwise identity. |
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289 | This is not the same as comparing for equality on IEEE hosts: |
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290 | -0.0 equals 0.0 but they are not identical, and conversely |
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291 | two NaNs might be identical but they cannot be equal. */ |
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292 | #define REAL_VALUES_IDENTICAL(x, y) \ |
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293 | (!bcmp ((char *) &(x), (char *) &(y), sizeof (REAL_VALUE_TYPE))) |
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294 | |
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295 | /* Compare two floating-point values for equality. */ |
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296 | #ifndef REAL_VALUES_EQUAL |
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297 | #define REAL_VALUES_EQUAL(x, y) ((x) == (y)) |
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298 | #endif |
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299 | |
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300 | /* Compare two floating-point values for less than. */ |
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301 | #ifndef REAL_VALUES_LESS |
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302 | #define REAL_VALUES_LESS(x, y) ((x) < (y)) |
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303 | #endif |
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304 | |
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305 | /* Truncate toward zero to an integer floating-point value. */ |
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306 | #ifndef REAL_VALUE_RNDZINT |
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307 | #define REAL_VALUE_RNDZINT(x) ((double) ((int) (x))) |
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308 | #endif |
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309 | |
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310 | /* Truncate toward zero to an unsigned integer floating-point value. */ |
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311 | #ifndef REAL_VALUE_UNSIGNED_RNDZINT |
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312 | #define REAL_VALUE_UNSIGNED_RNDZINT(x) ((double) ((unsigned int) (x))) |
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313 | #endif |
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314 | |
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315 | /* Convert a floating-point value to integer, rounding toward zero. */ |
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316 | #ifndef REAL_VALUE_FIX |
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317 | #define REAL_VALUE_FIX(x) ((int) (x)) |
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318 | #endif |
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319 | |
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320 | /* Convert a floating-point value to unsigned integer, rounding |
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321 | toward zero. */ |
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322 | #ifndef REAL_VALUE_UNSIGNED_FIX |
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323 | #define REAL_VALUE_UNSIGNED_FIX(x) ((unsigned int) (x)) |
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324 | #endif |
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325 | |
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326 | /* Scale X by Y powers of 2. */ |
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327 | #ifndef REAL_VALUE_LDEXP |
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328 | #define REAL_VALUE_LDEXP(x, y) ldexp (x, y) |
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329 | extern double ldexp (); |
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330 | #endif |
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331 | |
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332 | /* Convert the string X to a floating-point value. */ |
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333 | #ifndef REAL_VALUE_ATOF |
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334 | #if 1 |
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335 | /* Use real.c to convert decimal numbers to binary, ... */ |
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336 | REAL_VALUE_TYPE ereal_atof (); |
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337 | #define REAL_VALUE_ATOF(x, s) ereal_atof (x, s) |
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338 | #else |
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339 | /* ... or, if you like the host computer's atof, go ahead and use it: */ |
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340 | #define REAL_VALUE_ATOF(x, s) atof (x) |
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341 | #if defined (MIPSEL) || defined (MIPSEB) |
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342 | /* MIPS compiler can't handle parens around the function name. |
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343 | This problem *does not* appear to be connected with any |
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344 | macro definition for atof. It does not seem there is one. */ |
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345 | extern double atof (); |
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346 | #else |
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347 | extern double (atof) (); |
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348 | #endif |
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349 | #endif |
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350 | #endif |
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351 | |
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352 | /* Negate the floating-point value X. */ |
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353 | #ifndef REAL_VALUE_NEGATE |
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354 | #define REAL_VALUE_NEGATE(x) (- (x)) |
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355 | #endif |
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356 | |
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357 | /* Truncate the floating-point value X to mode MODE. This is correct only |
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358 | for the most common case where the host and target have objects of the same |
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359 | size and where `float' is SFmode. */ |
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360 | |
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361 | /* Don't use REAL_VALUE_TRUNCATE directly--always call real_value_truncate. */ |
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362 | extern REAL_VALUE_TYPE real_value_truncate PROTO((enum machine_mode, REAL_VALUE_TYPE)); |
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363 | |
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364 | #ifndef REAL_VALUE_TRUNCATE |
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365 | #define REAL_VALUE_TRUNCATE(mode, x) \ |
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366 | (GET_MODE_BITSIZE (mode) == sizeof (float) * HOST_BITS_PER_CHAR \ |
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367 | ? (float) (x) : (x)) |
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368 | #endif |
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369 | |
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370 | /* Determine whether a floating-point value X is infinite. */ |
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371 | #ifndef REAL_VALUE_ISINF |
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372 | #define REAL_VALUE_ISINF(x) (target_isinf (x)) |
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373 | #endif |
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374 | |
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375 | /* Determine whether a floating-point value X is a NaN. */ |
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376 | #ifndef REAL_VALUE_ISNAN |
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377 | #define REAL_VALUE_ISNAN(x) (target_isnan (x)) |
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378 | #endif |
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379 | |
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380 | /* Determine whether a floating-point value X is negative. */ |
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381 | #ifndef REAL_VALUE_NEGATIVE |
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382 | #define REAL_VALUE_NEGATIVE(x) (target_negative (x)) |
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383 | #endif |
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384 | |
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385 | extern int target_isnan PROTO ((REAL_VALUE_TYPE)); |
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386 | extern int target_isinf PROTO ((REAL_VALUE_TYPE)); |
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387 | extern int target_negative PROTO ((REAL_VALUE_TYPE)); |
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388 | |
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389 | /* Determine whether a floating-point value X is minus 0. */ |
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390 | #ifndef REAL_VALUE_MINUS_ZERO |
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391 | #define REAL_VALUE_MINUS_ZERO(x) ((x) == 0 && REAL_VALUE_NEGATIVE (x)) |
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392 | #endif |
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393 | |
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394 | /* Constant real values 0, 1, 2, and -1. */ |
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395 | |
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396 | extern REAL_VALUE_TYPE dconst0; |
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397 | extern REAL_VALUE_TYPE dconst1; |
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398 | extern REAL_VALUE_TYPE dconst2; |
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399 | extern REAL_VALUE_TYPE dconstm1; |
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400 | |
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401 | /* Union type used for extracting real values from CONST_DOUBLEs |
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402 | or putting them in. */ |
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403 | |
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404 | union real_extract |
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405 | { |
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406 | REAL_VALUE_TYPE d; |
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407 | HOST_WIDE_INT i[sizeof (REAL_VALUE_TYPE) / sizeof (HOST_WIDE_INT)]; |
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408 | }; |
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409 | |
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410 | /* For a CONST_DOUBLE: |
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411 | The usual two ints that hold the value. |
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412 | For a DImode, that is all there are; |
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413 | and CONST_DOUBLE_LOW is the low-order word and ..._HIGH the high-order. |
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414 | For a float, the number of ints varies, |
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415 | and CONST_DOUBLE_LOW is the one that should come first *in memory*. |
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416 | So use &CONST_DOUBLE_LOW(r) as the address of an array of ints. */ |
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417 | #define CONST_DOUBLE_LOW(r) XWINT (r, 2) |
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418 | #define CONST_DOUBLE_HIGH(r) XWINT (r, 3) |
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419 | |
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420 | /* Link for chain of all CONST_DOUBLEs in use in current function. */ |
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421 | #define CONST_DOUBLE_CHAIN(r) XEXP (r, 1) |
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422 | /* The MEM which represents this CONST_DOUBLE's value in memory, |
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423 | or const0_rtx if no MEM has been made for it yet, |
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424 | or cc0_rtx if it is not on the chain. */ |
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425 | #define CONST_DOUBLE_MEM(r) XEXP (r, 0) |
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426 | |
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427 | /* Function to return a real value (not a tree node) |
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428 | from a given integer constant. */ |
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429 | REAL_VALUE_TYPE real_value_from_int_cst (); |
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430 | |
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431 | /* Given a CONST_DOUBLE in FROM, store into TO the value it represents. */ |
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432 | |
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433 | #define REAL_VALUE_FROM_CONST_DOUBLE(to, from) \ |
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434 | do { union real_extract u; \ |
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435 | bcopy ((char *) &CONST_DOUBLE_LOW ((from)), (char *) &u, sizeof u); \ |
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436 | to = u.d; } while (0) |
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437 | |
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438 | /* Return a CONST_DOUBLE with value R and mode M. */ |
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439 | |
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440 | #define CONST_DOUBLE_FROM_REAL_VALUE(r, m) immed_real_const_1 (r, m) |
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441 | extern struct rtx_def *immed_real_const_1 PROTO((REAL_VALUE_TYPE, |
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442 | enum machine_mode)); |
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443 | |
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444 | |
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445 | /* Convert a floating point value `r', that can be interpreted |
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446 | as a host machine float or double, to a decimal ASCII string `s' |
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447 | using printf format string `fmt'. */ |
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448 | #ifndef REAL_VALUE_TO_DECIMAL |
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449 | #define REAL_VALUE_TO_DECIMAL(r, fmt, s) (sprintf (s, fmt, r)) |
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450 | #endif |
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451 | |
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452 | /* Replace R by 1/R in the given machine mode, if the result is exact. */ |
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453 | extern int exact_real_inverse PROTO((enum machine_mode, REAL_VALUE_TYPE *)); |
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454 | |
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455 | extern void debug_real PROTO ((REAL_VALUE_TYPE)); |
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456 | |
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457 | /* In varasm.c */ |
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458 | extern void assemble_real PROTO ((REAL_VALUE_TYPE, |
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459 | enum machine_mode)); |
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460 | #endif /* Not REAL_H_INCLUDED */ |
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