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Last change
on this file since 108 was 10, checked in by bird, 23 years ago |
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Initial revision
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Property cvs2svn:cvs-rev
set to
1.1
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Property svn:eol-style
set to
native
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Property svn:executable
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*
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File size:
494 bytes
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| 1 | /* strncmp -- compare two strings, stop after n bytes.
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| 2 | This function is in the public domain. */
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| 3 |
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| 4 | #include <ansidecl.h>
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| 5 | #ifdef __STDC__
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| 6 | #include <stddef.h>
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| 7 | #else
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| 8 | #define size_t unsigned long
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| 9 | #endif
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| 10 |
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| 11 | int
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| 12 | strncmp(s1, s2, n)
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| 13 | const char *s1, *s2;
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| 14 | register size_t n;
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| 15 | {
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| 16 | register unsigned char u1, u2;
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| 17 |
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| 18 | while (n-- > 0)
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| 19 | {
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| 20 | u1 = (unsigned char) *s1++;
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| 21 | u2 = (unsigned char) *s2++;
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| 22 | if (u1 != u2)
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| 23 | return u1 - u2;
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| 24 | if (u1 == '\0')
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| 25 | return 0;
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| 26 | }
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| 27 | return 0;
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| 28 | }
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