coshf
float coshf(float);
return (CMPLXF(coshf(x), x * y));
return (CMPLXF(coshf(x) * c, sinhf(x) * s));
return (CMPLXF(sinhf(x) * c, coshf(x) * s));
test_even_tol(ccoshf, z, CMPLXL(coshf(nums[i]), 0), FLT_ULP());
test_even_tol(ccosf, z, CMPLXL(coshf(nums[i]), -0.0),