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strcspn.c
Package: vxwork_src.rar [view]
Upload User: nvosite88
Upload Date: 2007-01-17
Package Size: 4983k
Code Size: 1k
Category:
VxWorks
Development Platform:
C/C++
- /* strcspn.c - search string for character, string */
- /* Copyright 1992-1993 Wind River Systems, Inc. */
- /*
- modification history
- --------------------
- 01c,25feb93,jdi documentation cleanup for 5.1.
- 01b,20sep92,smb documentation additions
- 01a,08jul92,smb written and documented.
- */
- /*
- DESCRIPTION
- INCLUDE FILES: string.h
- SEE ALSO: American National Standard X3.159-1989
- NOMANUAL
- */
- #include "vxWorks.h"
- #include "string.h"
- /*******************************************************************************
- *
- * strcspn - return the string length up to the first character from a given set (ANSI)
- *
- * This routine computes the length of the maximum initial segment of string
- * <s1> that consists entirely of characters not included in string <s2>.
- *
- * INCLUDE FILES: string.h
- *
- * RETURNS:
- * The length of the string segment.
- *
- * SEE ALSO: strpbrk(), strspn()
- */
- size_t strcspn
- (
- const char * s1, /* string to search */
- const char * s2 /* set of characters to look for in <s1> */
- )
- {
- const char *save;
- const char *p;
- char c1;
- char c2;
- for (save = s1 + 1; (c1 = *s1++) != EOS; ) /* search for EOS */
- for (p = s2; (c2 = *p++) != EOS; ) /* search for first occurance */
- {
- if (c1 == c2)
- return (s1 - save); /* return index of substring */
- }
- return (s1 - save);
- }