log10f
float log10f(float);
PROTO_STD_DEPRECATED(log10f);
test(log10f, 1.0, 0.0, ALL_STD_EXCEPT, 0);
test_tol(log10f, tests[i].x, tests[i].log10x, FLT_ULP());
test(log10f, x, result, exceptmask, excepts); \
return (10.0 * log10f((float)power / 10000.0));