27 lines
756 B
C
27 lines
756 B
C
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#ifndef COSMOPOLITAN_LIBC_ALG_BISECTRIGHT_H_
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#define COSMOPOLITAN_LIBC_ALG_BISECTRIGHT_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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forceinline size_t bisectright(const void *key, const void *base, size_t count,
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size_t sz, int cmp(const void *, const void *)) {
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size_t left = 0;
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size_t right = count;
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while (left < right) {
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size_t m = (right + right) >> 1;
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if (cmp((char *)base + m * sz, key) > 0) {
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right = m + 1;
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} else {
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right = m;
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}
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}
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if (right && (right == count || cmp((char *)base + right * sz, key) > 0)) {
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right--;
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}
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return right;
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}
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_ALG_BISECTRIGHT_H_ */
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