50 lines
939 B
C
50 lines
939 B
C
/*
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* $Id$
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*/
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/*
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* GT CLIPPER STANDARD HEADER
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*
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* File......: atdiff.c
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* Author....: Andy M Leighton
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* BBS.......: The Dark Knight Returns
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* Net/Node..: 050/069
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* User Name.: Andy Leighton
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* Date......: 23/05/93
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* Revision..: 1.00
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*
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* This is an original work by Andy Leighton and is placed in the
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* public domain.
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*/
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#include "hbapi.h"
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HB_FUNC( GT_ATDIFF )
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{
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char *s1, *s2;
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int pos, len;
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if (ISCHAR(1) && ISCHAR(2)) {
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s1 = hb_parc(1);
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s2 = hb_parc(2);
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len = hb_parclen(2);
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/*
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loop through comparing both strings
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NOTE: pos starts at 1, so as to return a string index
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for CLIPPER
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*/
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for (pos = 1; (pos <= len) && (*s1 == *s2); s2++, s1++)
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pos++;
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if (pos > len) /* strings match exactly!!! */
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hb_retni(0);
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else
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hb_retni(pos);
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} else {
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hb_retni(-1); /* parameter mismatch - error -1 */
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}
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}
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