Last change
on this file since 473 was 398, checked in by coas-nagasima, 5 years ago |
mbedTLS版Azure IoT Hub接続サンプルのソースコードを追加
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Property svn:eol-style
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Property svn:mime-type
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File size:
437 bytes
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[398] | 1 | #include <string.h>
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| 2 | #include <stdint.h>
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| 3 | #include <limits.h>
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| 4 |
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| 5 | #define ALIGN (sizeof(size_t))
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| 6 | #define ONES ((size_t)-1/UCHAR_MAX)
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| 7 | #define HIGHS (ONES * (UCHAR_MAX/2+1))
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| 8 | #define HASZERO(x) ((x)-ONES & ~(x) & HIGHS)
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| 9 |
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| 10 | size_t strlen(const char *s)
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| 11 | {
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| 12 | const char *a = s;
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| 13 | const size_t *w;
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| 14 | for (; (uintptr_t)s % ALIGN; s++) if (!*s) return s-a;
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| 15 | for (w = (const void *)s; !HASZERO(*w); w++);
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| 16 | for (s = (const void *)w; *s; s++);
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| 17 | return s-a;
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| 18 | }
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