Last change
on this file since 445 was 444, checked in by coas-nagasima, 4 years ago |
muslのソースコードを追加
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Property svn:eol-style
set to
native
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Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
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File size:
452 bytes
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1 | #include <string.h>
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2 |
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3 | #define BITOP(a,b,op) \
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4 | ((a)[(size_t)(b)/(8*sizeof *(a))] op (size_t)1<<((size_t)(b)%(8*sizeof *(a))))
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5 |
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6 | size_t strspn(const char *s, const char *c)
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7 | {
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8 | const char *a = s;
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9 | size_t byteset[32/sizeof(size_t)] = { 0 };
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10 |
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11 | if (!c[0]) return 0;
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12 | if (!c[1]) {
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13 | for (; *s == *c; s++);
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14 | return s-a;
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15 | }
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16 |
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17 | for (; *c && BITOP(byteset, *(unsigned char *)c, |=); c++);
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18 | for (; *s && BITOP(byteset, *(unsigned char *)s, &); s++);
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19 | return s-a;
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20 | }
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