Function acos_impl_double

src/fl/math/math.cpp.hpp:579–586

}

double acos_impl_double(double value) {
#if FL_MATH_USE_LIBM
    return ::acos(value);
#else
    const double kPiHalf = 1.57079632679489661923;
    return kPiHalf - asin_impl_double(value);
#endif
}

float tan_impl_float(float value) {
#if FL_MATH_USE_LIBM