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Differential D31663 Diff 94137 stand/libsa/strcasecmp.c

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stand/libsa/strcasecmp.c

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#include <string.h> #include <string.h>
#include "stand.h" #include "stand.h"
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strcasecmp.c 8.1 (Berkeley) 6/4/93"; static char sccsid[] = "@(#)strcasecmp.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
int int
strcasecmp(s1, s2) strcasecmp(const char *s1, const char *s2)
const char *s1, *s2;
{ {
const u_char const u_char *us1 = (const u_char *)s1,
*us1 = (const u_char *)s1,
*us2 = (const u_char *)s2; *us2 = (const u_char *)s2;
while (tolower(*us1) == tolower(*us2++)) u_char u1, u2;
if (*us1++ == '\0')
while ((u1 = tolower(*us1)) == (u2 = tolower(*us2))) {
if (u1 == '\0') {
return (0); return (0);
return (tolower(*us1) - tolower(*--us2));
} }
us1++, us2++;
}
return (u1 - u2);
jrtc27Unsubmitted
Done
Inline Actions

Given that tolower is an inline function I doubt this has any effect on the final code generated, these are all simple transformations for half-decent compilers to make.

jrtc27: Given that tolower is an inline function I doubt this has any effect on the final code…
}
int int
strncasecmp(s1, s2, n) strncasecmp(const char *s1, const char *s2, size_t n)
const char *s1, *s2;
size_t n;
{ {
if (n != 0) { if (n != 0) {
const u_char const u_char *us1 = (const u_char *)s1,
*us1 = (const u_char *)s1,
*us2 = (const u_char *)s2; *us2 = (const u_char *)s2;
u_char u1, u2;
do { do {
if (tolower(*us1) != tolower(*us2++)) if ((u1 = tolower(*us1)) != (u2 = tolower(*us2))) {
return (tolower(*us1) - tolower(*--us2)); return (u1 - u2);
if (*us1++ == '\0') }
if (u1 == '\0') {
break; break;
}
us1++, us2++;
} while (--n != 0); } while (--n != 0);
} }
return (0); return (0);
} }