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Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
431 bytes
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| Line | |
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| 1 | /* |
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| 2 | FUNCTION |
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| 3 | <<ffs>>---find first bit set in a word |
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| 4 | |
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| 5 | INDEX |
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| 6 | ffs |
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| 7 | |
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| 8 | SYNOPSIS |
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| 9 | #include <strings.h> |
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| 10 | int ffs(int <[word]>); |
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| 11 | |
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| 12 | DESCRIPTION |
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| 13 | |
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| 14 | <<ffs>> returns the first bit set in a word. |
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| 15 | |
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| 16 | RETURNS |
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| 17 | <<ffs>> returns 0 if <[c]> is 0, 1 if <[c]> is odd, 2 if <[c]> is a multiple of |
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| 18 | 2, etc. |
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| 19 | |
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| 20 | PORTABILITY |
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| 21 | <<ffs>> is not ANSI C. |
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| 22 | |
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| 23 | No supporting OS subroutines are required. */ |
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| 24 | |
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| 25 | #include <strings.h> |
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| 26 | |
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| 27 | int |
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| 28 | ffs(int i) |
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| 29 | { |
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| 30 | |
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| 31 | return (__builtin_ffs(i)); |
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| 32 | } |
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