/* strchr.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" /****************************************************************************** * * strchr - find the first occurrence of a character in a string (ANSI) * * This routine finds the first occurrence of character * in string . The terminating null is considered to be part of the string. * * INCLUDE FILES: string.h * * RETURNS: * The address of the located character, or NULL if the character is not found. */ char * strchr ( const char * s, /* string in which to search */ int c /* character to find in string */ ) { char *r = CHAR_FROM_CONST(s); while (*r != (char) c) /* search loop */ { if (*r++ == EOS) /* end of string */ return (NULL); } return (r); }
