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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
#include <ast.h>
#if _lib_strncasecmp
NoN(strncasecmp)
#else
#include <ctype.h>
#undef strncasecmp
int
strncasecmp(register const char* a, register const char* b, size_t n)
{
register const char* e;
register int ac;
register int bc;
register int d;
e = a + n;
for (;;)
{
if (a >= e)
return 0;
ac = *a++;
if (isupper(ac))
ac = tolower(ac);
bc = *b++;
if (isupper(bc))
bc = tolower(bc);
if (d = ac - bc)
return d;
if (!ac)
return 0;
}
}
#endif
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