source: trunk/third/perl/handy.h @ 14545

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1/*    handy.h
2 *
3 *    Copyright (c) 1991-2000, Larry Wall
4 *
5 *    You may distribute under the terms of either the GNU General Public
6 *    License or the Artistic License, as specified in the README file.
7 *
8 */
9
10#if !defined(__STDC__)
11#ifdef NULL
12#undef NULL
13#endif
14#ifndef I286
15#  define NULL 0
16#else
17#  define NULL 0L
18#endif
19#endif
20
21#define Null(type) ((type)NULL)
22
23/*
24=for apidoc AmU||Nullch
25Null character pointer.
26
27=for apidoc AmU||Nullsv
28Null SV pointer.
29
30=cut
31*/
32
33#define Nullch Null(char*)
34#define Nullfp Null(PerlIO*)
35#define Nullsv Null(SV*)
36
37#ifdef TRUE
38#undef TRUE
39#endif
40#ifdef FALSE
41#undef FALSE
42#endif
43#define TRUE (1)
44#define FALSE (0)
45
46
47/* XXX Configure ought to have a test for a boolean type, if I can
48   just figure out all the headers such a test needs.
49   Andy Dougherty       August 1996
50*/
51/* bool is built-in for g++-2.6.3 and later, which might be used
52   for extensions.  <_G_config.h> defines _G_HAVE_BOOL, but we can't
53   be sure _G_config.h will be included before this file.  _G_config.h
54   also defines _G_HAVE_BOOL for both gcc and g++, but only g++
55   actually has bool.  Hence, _G_HAVE_BOOL is pretty useless for us.
56   g++ can be identified by __GNUG__.
57   Andy Dougherty       February 2000
58*/
59#ifdef __GNUG__         /* GNU g++ has bool built-in */
60#  ifndef HAS_BOOL
61#    define HAS_BOOL 1
62#  endif
63#endif
64
65/* The NeXT dynamic loader headers will not build with the bool macro
66   So declare them now to clear confusion.
67*/
68#if defined(NeXT) || defined(__NeXT__)
69# undef FALSE
70# undef TRUE
71  typedef enum bool { FALSE = 0, TRUE = 1 } bool;
72# define ENUM_BOOL 1
73# ifndef HAS_BOOL
74#  define HAS_BOOL 1
75# endif /* !HAS_BOOL */
76#endif /* NeXT || __NeXT__ */
77
78#ifndef HAS_BOOL
79# if defined(UTS) || defined(VMS)
80#  define bool int
81# else
82#  define bool char
83# endif
84# define HAS_BOOL 1
85#endif
86
87/* XXX A note on the perl source internal type system.  The
88   original intent was that I32 be *exactly* 32 bits.
89
90   Currently, we only guarantee that I32 is *at least* 32 bits.
91   Specifically, if int is 64 bits, then so is I32.  (This is the case
92   for the Cray.)  This has the advantage of meshing nicely with
93   standard library calls (where we pass an I32 and the library is
94   expecting an int), but the disadvantage that an I32 is not 32 bits.
95   Andy Dougherty       August 1996
96
97   There is no guarantee that there is *any* integral type with
98   exactly 32 bits.  It is perfectly legal for a system to have
99   sizeof(short) == sizeof(int) == sizeof(long) == 8.
100
101   Similarly, there is no guarantee that I16 and U16 have exactly 16
102   bits.
103
104   For dealing with issues that may arise from various 32/64-bit
105   systems, we will ask Configure to check out
106
107        SHORTSIZE == sizeof(short)
108        INTSIZE == sizeof(int)
109        LONGSIZE == sizeof(long)
110        LONGLONGSIZE == sizeof(long long) (if HAS_LONG_LONG)
111        PTRSIZE == sizeof(void *)
112        DOUBLESIZE == sizeof(double)
113        LONG_DOUBLESIZE == sizeof(long double) (if HAS_LONG_DOUBLE).
114
115*/
116
117typedef I8TYPE I8;
118typedef U8TYPE U8;
119typedef I16TYPE I16;
120typedef U16TYPE U16;
121typedef I32TYPE I32;
122typedef U32TYPE U32;
123#ifdef PERL_CORE
124#   ifdef HAS_QUAD
125#       if QUADKIND == QUAD_IS_INT64_T
126#           include <sys/types.h>
127#           ifdef I_INTTYPES /* e.g. Linux has int64_t without <inttypes.h> */
128#               include <inttypes.h>
129#           endif
130#       endif
131typedef I64TYPE I64;
132typedef U64TYPE U64;
133#   endif
134#endif /* PERL_CORE */
135
136/* Mention I8SIZE, U8SIZE, I16SIZE, U16SIZE, I32SIZE, U32SIZE,
137   I64SIZE, and U64SIZE here so that metaconfig pulls them in. */
138
139#if defined(UINT8_MAX) && defined(INT16_MAX) && defined(INT32_MAX)
140
141/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
142   Please search CHAR_MAX in perl.h for further details. */
143#define U8_MAX UINT8_MAX
144#define U8_MIN UINT8_MIN
145
146#define I16_MAX INT16_MAX
147#define I16_MIN INT16_MIN
148#define U16_MAX UINT16_MAX
149#define U16_MIN UINT16_MIN
150
151#define I32_MAX INT32_MAX
152#define I32_MIN INT32_MIN
153#define U32_MAX UINT32_MAX
154#define U32_MIN UINT32_MIN
155
156#else
157
158/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
159   Please search CHAR_MAX in perl.h for further details. */
160#define U8_MAX PERL_UCHAR_MAX
161#define U8_MIN PERL_UCHAR_MIN
162
163#define I16_MAX PERL_SHORT_MAX
164#define I16_MIN PERL_SHORT_MIN
165#define U16_MAX PERL_USHORT_MAX
166#define U16_MIN PERL_USHORT_MIN
167
168#if LONGSIZE > 4
169# define I32_MAX PERL_INT_MAX
170# define I32_MIN PERL_INT_MIN
171# define U32_MAX PERL_UINT_MAX
172# define U32_MIN PERL_UINT_MIN
173#else
174# define I32_MAX PERL_LONG_MAX
175# define I32_MIN PERL_LONG_MIN
176# define U32_MAX PERL_ULONG_MAX
177# define U32_MIN PERL_ULONG_MIN
178#endif
179
180#endif
181
182#define BIT_DIGITS(N)   (((N)*146)/485 + 1)  /* log2(10) =~ 146/485 */
183#define TYPE_DIGITS(T)  BIT_DIGITS(sizeof(T) * 8)
184#define TYPE_CHARS(T)   (TYPE_DIGITS(T) + 2) /* sign, NUL */
185
186#define Ctl(ch) ((ch) & 037)
187
188/*
189=for apidoc Am|bool|strNE|char* s1|char* s2
190Test two strings to see if they are different.  Returns true or
191false.
192
193=for apidoc Am|bool|strEQ|char* s1|char* s2
194Test two strings to see if they are equal.  Returns true or false.
195
196=for apidoc Am|bool|strLT|char* s1|char* s2
197Test two strings to see if the first, C<s1>, is less than the second,
198C<s2>.  Returns true or false.
199
200=for apidoc Am|bool|strLE|char* s1|char* s2
201Test two strings to see if the first, C<s1>, is less than or equal to the
202second, C<s2>.  Returns true or false.
203
204=for apidoc Am|bool|strGT|char* s1|char* s2
205Test two strings to see if the first, C<s1>, is greater than the second,
206C<s2>.  Returns true or false.
207
208=for apidoc Am|bool|strGE|char* s1|char* s2
209Test two strings to see if the first, C<s1>, is greater than or equal to
210the second, C<s2>.  Returns true or false.
211
212=for apidoc Am|bool|strnNE|char* s1|char* s2|STRLEN len
213Test two strings to see if they are different.  The C<len> parameter
214indicates the number of bytes to compare.  Returns true or false. (A
215wrapper for C<strncmp>).
216
217=for apidoc Am|bool|strnEQ|char* s1|char* s2|STRLEN len
218Test two strings to see if they are equal.  The C<len> parameter indicates
219the number of bytes to compare.  Returns true or false. (A wrapper for
220C<strncmp>).
221
222=cut
223*/
224
225#define strNE(s1,s2) (strcmp(s1,s2))
226#define strEQ(s1,s2) (!strcmp(s1,s2))
227#define strLT(s1,s2) (strcmp(s1,s2) < 0)
228#define strLE(s1,s2) (strcmp(s1,s2) <= 0)
229#define strGT(s1,s2) (strcmp(s1,s2) > 0)
230#define strGE(s1,s2) (strcmp(s1,s2) >= 0)
231#define strnNE(s1,s2,l) (strncmp(s1,s2,l))
232#define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))
233
234#ifdef HAS_MEMCMP
235#  define memNE(s1,s2,l) (memcmp(s1,s2,l))
236#  define memEQ(s1,s2,l) (!memcmp(s1,s2,l))
237#else
238#  define memNE(s1,s2,l) (bcmp(s1,s2,l))
239#  define memEQ(s1,s2,l) (!bcmp(s1,s2,l))
240#endif
241
242/*
243 * Character classes.
244 *
245 * Unfortunately, the introduction of locales means that we
246 * can't trust isupper(), etc. to tell the truth.  And when
247 * it comes to /\w+/ with tainting enabled, we *must* be able
248 * to trust our character classes.
249 *
250 * Therefore, the default tests in the text of Perl will be
251 * independent of locale.  Any code that wants to depend on
252 * the current locale will use the tests that begin with "lc".
253 */
254
255#ifdef HAS_SETLOCALE  /* XXX Is there a better test for this? */
256#  ifndef CTYPE256
257#    define CTYPE256
258#  endif
259#endif
260
261/*
262=for apidoc Am|bool|isALNUM|char ch
263Returns a boolean indicating whether the C C<char> is an ascii alphanumeric
264character or digit.
265
266=for apidoc Am|bool|isALPHA|char ch
267Returns a boolean indicating whether the C C<char> is an ascii alphabetic
268character.
269
270=for apidoc Am|bool|isSPACE|char ch
271Returns a boolean indicating whether the C C<char> is whitespace.
272
273=for apidoc Am|bool|isDIGIT|char ch
274Returns a boolean indicating whether the C C<char> is an ascii
275digit.
276
277=for apidoc Am|bool|isUPPER|char ch
278Returns a boolean indicating whether the C C<char> is an uppercase
279character.
280
281=for apidoc Am|bool|isLOWER|char ch
282Returns a boolean indicating whether the C C<char> is a lowercase
283character.
284
285=for apidoc Am|char|toUPPER|char ch
286Converts the specified character to uppercase.
287
288=for apidoc Am|char|toLOWER|char ch
289Converts the specified character to lowercase.
290
291=cut
292*/
293
294#define isALNUM(c)      (isALPHA(c) || isDIGIT(c) || (c) == '_')
295#define isIDFIRST(c)    (isALPHA(c) || (c) == '_')
296#define isALPHA(c)      (isUPPER(c) || isLOWER(c))
297#define isSPACE(c) \
298        ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) =='\r' || (c) == '\f')
299#define isDIGIT(c)      ((c) >= '0' && (c) <= '9')
300#ifdef EBCDIC
301    /* In EBCDIC we do not do locales: therefore() isupper() is fine. */
302#   define isUPPER(c)   isupper(c)
303#   define isLOWER(c)   islower(c)
304#   define isALNUMC(c)  isalnum(c)
305#   define isASCII(c)   isascii(c)
306#   define isCNTRL(c)   iscntrl(c)
307#   define isGRAPH(c)   isgraph(c)
308#   define isPRINT(c)   isprint(c)
309#   define isPUNCT(c)   ispunct(c)
310#   define isXDIGIT(c)  isxdigit(c)
311#   define toUPPER(c)   toupper(c)
312#   define toLOWER(c)   tolower(c)
313#else
314#   define isUPPER(c)   ((c) >= 'A' && (c) <= 'Z')
315#   define isLOWER(c)   ((c) >= 'a' && (c) <= 'z')
316#   define isALNUMC(c)  (isALPHA(c) || isDIGIT(c))
317#   define isASCII(c)   ((c) <= 127)
318#   define isCNTRL(c)   ((c) < ' ')
319#   define isGRAPH(c)   (isALNUM(c) || isPUNCT(c))
320#   define isPRINT(c)   (((c) > 32 && (c) < 127) || isSPACE(c))
321#   define isPUNCT(c)   (((c) >= 33 && (c) <= 47) || ((c) >= 58 && (c) <= 64)  || ((c) >= 91 && (c) <= 96) || ((c) >= 123 && (c) <= 126))
322#   define isXDIGIT(c)  (isdigit(c) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
323#   define toUPPER(c)   (isLOWER(c) ? (c) - ('a' - 'A') : (c))
324#   define toLOWER(c)   (isUPPER(c) ? (c) + ('a' - 'A') : (c))
325#endif
326
327#ifdef USE_NEXT_CTYPE
328
329#  define isALNUM_LC(c) \
330        (NXIsAlNum((unsigned int)(c)) || (char)(c) == '_')
331#  define isIDFIRST_LC(c) \
332        (NXIsAlpha((unsigned int)(c)) || (char)(c) == '_')
333#  define isALPHA_LC(c)         NXIsAlpha((unsigned int)(c))
334#  define isSPACE_LC(c)         NXIsSpace((unsigned int)(c))
335#  define isDIGIT_LC(c)         NXIsDigit((unsigned int)(c))
336#  define isUPPER_LC(c)         NXIsUpper((unsigned int)(c))
337#  define isLOWER_LC(c)         NXIsLower((unsigned int)(c))
338#  define isALNUMC_LC(c)        NXIsAlNum((unsigned int)(c))
339#  define isCNTRL_LC(c)         NXIsCntrl((unsigned int)(c))
340#  define isGRAPH_LC(c)         NXIsGraph((unsigned int)(c))
341#  define isPRINT_LC(c)         NXIsPrint((unsigned int)(c))
342#  define isPUNCT_LC(c)         NXIsPunct((unsigned int)(c))
343#  define toUPPER_LC(c)         NXToUpper((unsigned int)(c))
344#  define toLOWER_LC(c)         NXToLower((unsigned int)(c))
345
346#else /* !USE_NEXT_CTYPE */
347
348#  if defined(CTYPE256) || (!defined(isascii) && !defined(HAS_ISASCII))
349
350#    define isALNUM_LC(c)   (isalnum((unsigned char)(c)) || (char)(c) == '_')
351#    define isIDFIRST_LC(c) (isalpha((unsigned char)(c)) || (char)(c) == '_')
352#    define isALPHA_LC(c)       isalpha((unsigned char)(c))
353#    define isSPACE_LC(c)       isspace((unsigned char)(c))
354#    define isDIGIT_LC(c)       isdigit((unsigned char)(c))
355#    define isUPPER_LC(c)       isupper((unsigned char)(c))
356#    define isLOWER_LC(c)       islower((unsigned char)(c))
357#    define isALNUMC_LC(c)      isalnum((unsigned char)(c))
358#    define isCNTRL_LC(c)       iscntrl((unsigned char)(c))
359#    define isGRAPH_LC(c)       isgraph((unsigned char)(c))
360#    define isPRINT_LC(c)       isprint((unsigned char)(c))
361#    define isPUNCT_LC(c)       ispunct((unsigned char)(c))
362#    define toUPPER_LC(c)       toupper((unsigned char)(c))
363#    define toLOWER_LC(c)       tolower((unsigned char)(c))
364
365#  else
366
367#    define isALNUM_LC(c)       (isascii(c) && (isalnum(c) || (c) == '_'))
368#    define isIDFIRST_LC(c)     (isascii(c) && (isalpha(c) || (c) == '_'))
369#    define isALPHA_LC(c)       (isascii(c) && isalpha(c))
370#    define isSPACE_LC(c)       (isascii(c) && isspace(c))
371#    define isDIGIT_LC(c)       (isascii(c) && isdigit(c))
372#    define isUPPER_LC(c)       (isascii(c) && isupper(c))
373#    define isLOWER_LC(c)       (isascii(c) && islower(c))
374#    define isALNUMC_LC(c)      (isascii(c) && isalnum(c))
375#    define isCNTRL_LC(c)       (isascii(c) && iscntrl(c))
376#    define isGRAPH_LC(c)       (isascii(c) && isgraph(c))
377#    define isPRINT_LC(c)       (isascii(c) && isprint(c))
378#    define isPUNCT_LC(c)       (isascii(c) && ispunct(c))
379#    define toUPPER_LC(c)       toupper(c)
380#    define toLOWER_LC(c)       tolower(c)
381
382#  endif
383#endif /* USE_NEXT_CTYPE */
384
385#define isALNUM_uni(c)          is_uni_alnum(c)
386#define isIDFIRST_uni(c)        is_uni_idfirst(c)
387#define isALPHA_uni(c)          is_uni_alpha(c)
388#define isSPACE_uni(c)          is_uni_space(c)
389#define isDIGIT_uni(c)          is_uni_digit(c)
390#define isUPPER_uni(c)          is_uni_upper(c)
391#define isLOWER_uni(c)          is_uni_lower(c)
392#define isALNUMC_uni(c)         is_uni_alnumc(c)
393#define isASCII_uni(c)          is_uni_ascii(c)
394#define isCNTRL_uni(c)          is_uni_cntrl(c)
395#define isGRAPH_uni(c)          is_uni_graph(c)
396#define isPRINT_uni(c)          is_uni_print(c)
397#define isPUNCT_uni(c)          is_uni_punct(c)
398#define isXDIGIT_uni(c)         is_uni_xdigit(c)
399#define toUPPER_uni(c)          to_uni_upper(c)
400#define toTITLE_uni(c)          to_uni_title(c)
401#define toLOWER_uni(c)          to_uni_lower(c)
402
403#define isALNUM_LC_uni(c)       (c < 256 ? isALNUM_LC(c) : is_uni_alnum_lc(c))
404#define isIDFIRST_LC_uni(c)     (c < 256 ? isIDFIRST_LC(c) : is_uni_idfirst_lc(c))
405#define isALPHA_LC_uni(c)       (c < 256 ? isALPHA_LC(c) : is_uni_alpha_lc(c))
406#define isSPACE_LC_uni(c)       (c < 256 ? isSPACE_LC(c) : is_uni_space_lc(c))
407#define isDIGIT_LC_uni(c)       (c < 256 ? isDIGIT_LC(c) : is_uni_digit_lc(c))
408#define isUPPER_LC_uni(c)       (c < 256 ? isUPPER_LC(c) : is_uni_upper_lc(c))
409#define isLOWER_LC_uni(c)       (c < 256 ? isLOWER_LC(c) : is_uni_lower_lc(c))
410#define isALNUMC_LC_uni(c)      (c < 256 ? isALNUMC_LC(c) : is_uni_alnumc_lc(c))
411#define isCNTRL_LC_uni(c)       (c < 256 ? isCNTRL_LC(c) : is_uni_cntrl_lc(c))
412#define isGRAPH_LC_uni(c)       (c < 256 ? isGRAPH_LC(c) : is_uni_graph_lc(c))
413#define isPRINT_LC_uni(c)       (c < 256 ? isPRINT_LC(c) : is_uni_print_lc(c))
414#define isPUNCT_LC_uni(c)       (c < 256 ? isPUNCT_LC(c) : is_uni_punct_lc(c))
415#define toUPPER_LC_uni(c)       (c < 256 ? toUPPER_LC(c) : to_uni_upper_lc(c))
416#define toTITLE_LC_uni(c)       (c < 256 ? toUPPER_LC(c) : to_uni_title_lc(c))
417#define toLOWER_LC_uni(c)       (c < 256 ? toLOWER_LC(c) : to_uni_lower_lc(c))
418
419#define isALNUM_utf8(p)         is_utf8_alnum(p)
420#define isIDFIRST_utf8(p)       is_utf8_idfirst(p)
421#define isALPHA_utf8(p)         is_utf8_alpha(p)
422#define isSPACE_utf8(p)         is_utf8_space(p)
423#define isDIGIT_utf8(p)         is_utf8_digit(p)
424#define isUPPER_utf8(p)         is_utf8_upper(p)
425#define isLOWER_utf8(p)         is_utf8_lower(p)
426#define isALNUMC_utf8(p)        is_utf8_alnumc(p)
427#define isASCII_utf8(p)         is_utf8_ascii(p)
428#define isCNTRL_utf8(p)         is_utf8_cntrl(p)
429#define isGRAPH_utf8(p)         is_utf8_graph(p)
430#define isPRINT_utf8(p)         is_utf8_print(p)
431#define isPUNCT_utf8(p)         is_utf8_punct(p)
432#define isXDIGIT_utf8(p)        is_utf8_xdigit(p)
433#define toUPPER_utf8(p)         to_utf8_upper(p)
434#define toTITLE_utf8(p)         to_utf8_title(p)
435#define toLOWER_utf8(p)         to_utf8_lower(p)
436
437#define isALNUM_LC_utf8(p)      isALNUM_LC_uni(utf8_to_uv(p, 0))
438#define isIDFIRST_LC_utf8(p)    isIDFIRST_LC_uni(utf8_to_uv(p, 0))
439#define isALPHA_LC_utf8(p)      isALPHA_LC_uni(utf8_to_uv(p, 0))
440#define isSPACE_LC_utf8(p)      isSPACE_LC_uni(utf8_to_uv(p, 0))
441#define isDIGIT_LC_utf8(p)      isDIGIT_LC_uni(utf8_to_uv(p, 0))
442#define isUPPER_LC_utf8(p)      isUPPER_LC_uni(utf8_to_uv(p, 0))
443#define isLOWER_LC_utf8(p)      isLOWER_LC_uni(utf8_to_uv(p, 0))
444#define isALNUMC_LC_utf8(p)     isALNUMC_LC_uni(utf8_to_uv(p, 0))
445#define isCNTRL_LC_utf8(p)      isCNTRL_LC_uni(utf8_to_uv(p, 0))
446#define isGRAPH_LC_utf8(p)      isGRAPH_LC_uni(utf8_to_uv(p, 0))
447#define isPRINT_LC_utf8(p)      isPRINT_LC_uni(utf8_to_uv(p, 0))
448#define isPUNCT_LC_utf8(p)      isPUNCT_LC_uni(utf8_to_uv(p, 0))
449#define toUPPER_LC_utf8(p)      toUPPER_LC_uni(utf8_to_uv(p, 0))
450#define toTITLE_LC_utf8(p)      toTITLE_LC_uni(utf8_to_uv(p, 0))
451#define toLOWER_LC_utf8(p)      toLOWER_LC_uni(utf8_to_uv(p, 0))
452
453#ifdef EBCDIC
454EXT int ebcdic_control (int);
455#  define toCTRL(c)     ebcdic_control(c)
456#else
457  /* This conversion works both ways, strangely enough. */
458#  define toCTRL(c)    (toUPPER(c) ^ 64)
459#endif
460
461/* Line numbers are unsigned, 16 bits. */
462typedef U16 line_t;
463#ifdef lint
464#define NOLINE ((line_t)0)
465#else
466#define NOLINE ((line_t) 65535)
467#endif
468
469
470/*
471   XXX LEAKTEST doesn't really work in perl5.  There are direct calls to
472   safemalloc() in the source, so LEAKTEST won't pick them up.
473   (The main "offenders" are extensions.)
474   Further, if you try LEAKTEST, you'll also end up calling
475   Safefree, which might call safexfree() on some things that weren't
476   malloced with safexmalloc.  The correct "fix" to this, if anyone
477   is interested, is to ensure that all calls go through the New and
478   Renew macros.
479        --Andy Dougherty                August 1996
480*/
481
482/*
483=for apidoc Am|SV*|NEWSV|int id|STRLEN len
484Creates a new SV.  A non-zero C<len> parameter indicates the number of
485bytes of preallocated string space the SV should have.  An extra byte for a
486tailing NUL is also reserved.  (SvPOK is not set for the SV even if string
487space is allocated.)  The reference count for the new SV is set to 1.
488C<id> is an integer id between 0 and 1299 (used to identify leaks).
489
490=for apidoc Am|void|New|int id|void* ptr|int nitems|type
491The XSUB-writer's interface to the C C<malloc> function.
492
493=for apidoc Am|void|Newc|int id|void* ptr|int nitems|type|cast
494The XSUB-writer's interface to the C C<malloc> function, with
495cast.
496
497=for apidoc Am|void|Newz|int id|void* ptr|int nitems|type
498The XSUB-writer's interface to the C C<malloc> function.  The allocated
499memory is zeroed with C<memzero>.
500
501=for apidoc Am|void|Renew|void* ptr|int nitems|type
502The XSUB-writer's interface to the C C<realloc> function.
503
504=for apidoc Am|void|Renewc|void* ptr|int nitems|type|cast
505The XSUB-writer's interface to the C C<realloc> function, with
506cast.
507
508=for apidoc Am|void|Safefree|void* src|void* dest|int nitems|type
509The XSUB-writer's interface to the C C<free> function.
510
511=for apidoc Am|void|Move|void* src|void* dest|int nitems|type
512The XSUB-writer's interface to the C C<memmove> function.  The C<src> is the
513source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is
514the type.  Can do overlapping moves.  See also C<Copy>.
515
516=for apidoc Am|void|Copy|void* src|void* dest|int nitems|type
517The XSUB-writer's interface to the C C<memcpy> function.  The C<src> is the
518source, C<dest> is the destination, C<nitems> is the number of items, and C<type> is
519the type.  May fail on overlapping copies.  See also C<Move>.
520
521=for apidoc Am|void|Zero|void* dest|int nitems|type
522
523The XSUB-writer's interface to the C C<memzero> function.  The C<dest> is the
524destination, C<nitems> is the number of items, and C<type> is the type.
525
526=for apidoc Am|void|StructCopy|type src|type dest|type
527This is an architecture-independant macro to copy one structure to another.
528
529=cut
530*/
531
532#ifndef lint
533
534#define NEWSV(x,len)    newSV(len)
535
536#ifndef LEAKTEST
537
538#define New(x,v,n,t)    (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
539#define Newc(x,v,n,t,c) (v = (c*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
540#define Newz(x,v,n,t)   (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t)))), \
541                        memzero((char*)(v), (n)*sizeof(t))
542#define Renew(v,n,t) \
543          (v = (t*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
544#define Renewc(v,n,t,c) \
545          (v = (c*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
546#define Safefree(d)     safefree((Malloc_t)(d))
547
548#else /* LEAKTEST */
549
550#define New(x,v,n,t)    (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
551#define Newc(x,v,n,t,c) (v = (c*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
552#define Newz(x,v,n,t)   (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t)))), \
553                         memzero((char*)(v), (n)*sizeof(t))
554#define Renew(v,n,t) \
555          (v = (t*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
556#define Renewc(v,n,t,c) \
557          (v = (c*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
558#define Safefree(d)     safexfree((Malloc_t)(d))
559
560#define MAXXCOUNT 1400
561#define MAXY_SIZE 80
562#define MAXYCOUNT 16                    /* (MAXY_SIZE/4 + 1) */
563extern long xcount[MAXXCOUNT];
564extern long lastxcount[MAXXCOUNT];
565extern long xycount[MAXXCOUNT][MAXYCOUNT];
566extern long lastxycount[MAXXCOUNT][MAXYCOUNT];
567
568#endif /* LEAKTEST */
569
570#define Move(s,d,n,t)   (void)memmove((char*)(d),(char*)(s), (n) * sizeof(t))
571#define Copy(s,d,n,t)   (void)memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
572#define Zero(d,n,t)     (void)memzero((char*)(d), (n) * sizeof(t))
573
574#else /* lint */
575
576#define New(x,v,n,s)    (v = Null(s *))
577#define Newc(x,v,n,s,c) (v = Null(s *))
578#define Newz(x,v,n,s)   (v = Null(s *))
579#define Renew(v,n,s)    (v = Null(s *))
580#define Move(s,d,n,t)
581#define Copy(s,d,n,t)
582#define Zero(d,n,t)
583#define Safefree(d)     (d) = (d)
584
585#endif /* lint */
586
587#ifdef USE_STRUCT_COPY
588#define StructCopy(s,d,t) (*((t*)(d)) = *((t*)(s)))
589#else
590#define StructCopy(s,d,t) Copy(s,d,1,t)
591#endif
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