third_party/ulib/musl/src/stdlib/bsearch.c

#include <stdlib.h>

void* bsearch(const void* key, const void* base, size_t nel, size_t width,
              int (*cmp)(const void*, const void*)) {
    void* try
        ;
    int sign;
    while (nel > 0) {
        try
            = (char*)base + width * (nel / 2);
        sign = cmp(key, try);
        if (!sign)
            return try
                ;
        else if (nel == 1)
            break;
        else if (sign < 0)
            nel /= 2;
        else {
            base = try
                ;
            nel -= nel / 2;
        }
    }
    return NULL;
}