38 lines
821 B
C
38 lines
821 B
C
#include <fxlibc/string.h>
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/*
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** The strlen() function calculates the length of the string pointed to by s,
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** excluding the termi‐nating null byte ('\0').
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**
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** TODO: use quad-word access !
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*/
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size_t strlen(char const *str)
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{
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size_t i;
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if (str == NULL)
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return (0);
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i = -1;
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while (str[++i] != '\0') ;
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return (i);
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}
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/*
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** The strnlen() function returns the number of bytes in the string pointed to
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** by s, excluding the terminating null byte ('\0'), but at most maxlen.
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** In doing this, strnlen() looks only at the first maxlen characters in the
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** string pointed to by s and never beyond s+maxlen.
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**
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** TODO: use quad-word access !
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*/
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size_t strnlen(char const *str, size_t maxlen)
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{
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size_t i;
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if (str == NULL)
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return (0);
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i = -1;
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while (str[++i] != '\0' && (size_t)i < maxlen) ;
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return (i);
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}
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