ack/lang/cem/libcc.ansi/core/string/strspn.c
David Given d1cdb07719 Realise that the libc core can safely call other libc core functions, even if
they're not defined in the core: so putw() can call stdio stuff, for example.
So the earlier concept of pureness isn't necessary. Rename accordingly.
2018-06-21 23:24:23 +02:00

23 lines
426 B
C

/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* $Id$ */
#include <string.h>
size_t
strspn(const char* string, const char* in)
{
register const char *s1, *s2;
for (s1 = string; *s1; s1++)
{
for (s2 = in; *s2 && *s2 != *s1; s2++)
/* EMPTY */;
if (*s2 == '\0')
break;
}
return s1 - string;
}