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qsort patch from Paul Eggert

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svn: r2252
This commit is contained in:
Matthew Flatt 2006-02-16 02:59:36 +00:00
parent 047b1e8f48
commit 73fb3d2bac
1 changed files with 13 additions and 7 deletions
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20
src/mzscheme/gc2/my_qsort.c
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@ -1,25 +1,31 @@
#if defined(sparc) || defined(__sparc) || defined(__sparc__)
#if defined(sun) || defined(__sun) || defined(__sun__)
/* Sun's qsort() is broken. */
#define MAXSTACK 100
static void exchange(void *a, void *b, size_t size) {
size_t i;
int *ai = (int *) a;
int *bi = (int *) b;
char *ac;
char *bc;
/******************
* exchange a,b *
******************/
for (i = sizeof(int); i <= size; i += sizeof(int)) {
int t = *((int *)a);
*(((int *)a)++) = *((int *)b);
*(((int *)b)++) = t;
int t = *ai;
*ai++ = *bi;
*bi++ = t;
}
ac = (char *) ai;
bc = (char *) bi;
for (i = i - sizeof(int) + 1; i <= size; i++) {
char t = *((char *)a);
*(((char *)a)++) = *((char *)b);
*(((char *)b)++) = t;
char t = *ac;
*ac++ = *bc;
*bc++ = t;
}
}