math: fix two fma issues (only affects non-nearest rounding mode, x86)

[musl] / src / stat / fchmodat.c

#include <sys/stat.h>
#include "syscall.h"

int fchmodat(int fd, const char *path, mode_t mode, int flag)
{
        return syscall(SYS_fchmodat, fd, path, mode, flag);
}