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#include "byte.h"
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/* byte_chr returns the smallest integer i between 0 and len-1
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* inclusive such that one[i] equals needle, or len if not found. */
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size_t byte_chr(const void* haystack, size_t len, char needle) {
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register char c=needle;
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register const char* s=haystack;
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register const char* t=s+len;
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for (;;) {
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if (s==t || *s==c) break;
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++s;
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if (s==t || *s==c) break;
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++s;
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if (s==t || *s==c) break;
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++s;
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if (s==t || *s==c) break;
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++s;
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}
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return (size_t)(s-(const char*)haystack);
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}
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