X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=functions%2Fstring%2Fstrncmp.c;h=b6a98cecf77caa278aa6204691ca314168678bce;hp=ec9c56fb2a780e1a2a40efee5451c4c7836975df;hb=19b4cc9a30c2ede7a0cd6c417b5f26851376b708;hpb=419762f3c5da2a601e3c7427e25ae01293a73223 diff --git a/functions/string/strncmp.c b/functions/string/strncmp.c index ec9c56f..b6a98ce 100644 --- a/functions/string/strncmp.c +++ b/functions/string/strncmp.c @@ -5,23 +5,18 @@ // This code is Public Domain. Use, modify, and redistribute at will. // ---------------------------------------------------------------------------- -int strncmp( const char * s1, const char * s2, size_t n ) { /* TODO */ }; +#include <__size_t.h> -/* PDPC code - unreviewed +int strncmp( const char * src_1, const char * src_2, size_t n ) { - const unsigned char *p1; - const unsigned char *p2; - size_t x = 0; - - p1 = (const unsigned char *)s1; - p2 = (const unsigned char *)s2; - while (x < n) + while ( ( n-- != 0 ) && ( *src_1 == *src_2 ) ) { - if (p1[x] < p2[x]) return (-1); - else if (p1[x] > p2[x]) return (1); - else if (p1[x] == '\0') return (0); - x++; + ++src_1; + ++src_2; } - return (0); + if ( ( n == 0 ) ) + { + return 0; + } + return ( *src_1 - *src_2 ); } -*/