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source:
trunk/third/gmp/tests/mpz/t-sqrtrem.c
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18191

Revision 18191, 2.8 KB checked in by ghudson, 22 years ago (diff) |
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1 | /* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem. |

2 | |

3 | Copyright 1991, 1993, 1994, 1996, 2000, 2001, 2002 Free Software Foundation, |

4 | Inc. |

5 | |

6 | This file is part of the GNU MP Library. |

7 | |

8 | The GNU MP Library is free software; you can redistribute it and/or modify |

9 | it under the terms of the GNU Lesser General Public License as published by |

10 | the Free Software Foundation; either version 2.1 of the License, or (at your |

11 | option) any later version. |

12 | |

13 | The GNU MP Library is distributed in the hope that it will be useful, but |

14 | WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |

15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |

16 | License for more details. |

17 | |

18 | You should have received a copy of the GNU Lesser General Public License |

19 | along with the GNU MP Library; see the file COPYING.LIB. If not, write to |

20 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |

21 | MA 02111-1307, USA. */ |

22 | |

23 | #include <stdio.h> |

24 | #include <stdlib.h> |

25 | |

26 | #include "gmp.h" |

27 | #include "gmp-impl.h" |

28 | #include "tests.h" |

29 | |

30 | void dump_abort _PROTO ((mpz_t, mpz_t, mpz_t)); |

31 | void debug_mp _PROTO ((mpz_t, int)); |

32 | |

33 | int |

34 | main (int argc, char **argv) |

35 | { |

36 | mpz_t x2; |

37 | mpz_t x, rem; |

38 | mpz_t temp, temp2; |

39 | mp_size_t x2_size; |

40 | int i; |

41 | int reps = 20000; |

42 | gmp_randstate_ptr rands; |

43 | mpz_t bs; |

44 | unsigned long size_range; |

45 | |

46 | tests_start (); |

47 | rands = RANDS; |

48 | |

49 | mpz_init (bs); |

50 | |

51 | if (argc == 2) |

52 | reps = atoi (argv[1]); |

53 | |

54 | mpz_init (x2); |

55 | mpz_init (x); |

56 | mpz_init (rem); |

57 | mpz_init (temp); |

58 | mpz_init (temp2); |

59 | |

60 | for (i = 0; i < reps; i++) |

61 | { |

62 | mpz_urandomb (bs, rands, 32); |

63 | size_range = mpz_get_ui (bs) % 12 + 2; /* 0..8191 bit operands */ |

64 | |

65 | mpz_urandomb (bs, rands, size_range); |

66 | x2_size = mpz_get_ui (bs); |

67 | mpz_rrandomb (x2, rands, x2_size); |

68 | |

69 | /* printf ("%ld\n", SIZ (x2)); */ |

70 | |

71 | mpz_sqrtrem (x, rem, x2); |

72 | mpz_mul (temp, x, x); |

73 | |

74 | /* Is square of result > argument? */ |

75 | if (mpz_cmp (temp, x2) > 0) |

76 | dump_abort (x2, x, rem); |

77 | |

78 | mpz_add_ui (temp2, x, 1); |

79 | mpz_mul (temp2, temp2, temp2); |

80 | |

81 | /* Is square of (result + 1) <= argument? */ |

82 | if (mpz_cmp (temp2, x2) <= 0) |

83 | dump_abort (x2, x, rem); |

84 | |

85 | mpz_add (temp2, temp, rem); |

86 | |

87 | /* Is the remainder wrong? */ |

88 | if (mpz_cmp (x2, temp2) != 0) |

89 | dump_abort (x2, x, rem); |

90 | } |

91 | |

92 | mpz_clear (bs); |

93 | mpz_clear (x2); |

94 | mpz_clear (x); |

95 | mpz_clear (rem); |

96 | mpz_clear (temp); |

97 | mpz_clear (temp2); |

98 | |

99 | tests_end (); |

100 | exit (0); |

101 | } |

102 | |

103 | void |

104 | dump_abort (mpz_t x2, mpz_t x, mpz_t rem) |

105 | { |

106 | fprintf (stderr, "ERROR\n"); |

107 | fprintf (stderr, "x2 = "); debug_mp (x2, -16); |

108 | fprintf (stderr, "x = "); debug_mp (x, -16); |

109 | fprintf (stderr, "remainder = "); debug_mp (rem, -16); |

110 | abort(); |

111 | } |

112 | |

113 | void |

114 | debug_mp (mpz_t x, int base) |

115 | { |

116 | mpz_out_str (stderr, base, x); fputc ('\n', stderr); |

117 | } |

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