make __socketcall analogous to __syscall, error-returning

[musl] / src / math / aarch64 / fmaxf.c

#include <math.h>

float fmaxf(float x, float y)
{
        __asm__ ("fmaxnm %s0, %s1, %s2" : "=w"(x) : "w"(x), "w"(y));
        return x;
}