pow_impl_float()

float fl::pow_impl_float	(	float	base,
		float	exponent )

Definition at line 404 of file math.cpp.hpp.

                                                              {
#if FL_MATH_USE_LIBM
    return ::powf(base, exponent);
#else
    if (exponent == 0.0f) return 1.0f;
    int ie = static_cast<int>(exponent);
    if (static_cast<float>(ie) == exponent && ie >= -8 && ie <= 8) {
        float r = 1.0f;
        if (ie > 0)  { for (int i = 0; i < ie; ++i) r *= base; return r; }
        if (ie < 0)  { for (int i = 0; i < -ie; ++i) r *= base; return 1.0f / r; }
    }
    if (base <= 0.0f) return 0.0f;
    return exp_impl_float(exponent * detail::log_natural_<float>(base));
#endif
}

References exp_impl_float(), FL_NO_EXCEPT, and fl::detail::log_natural_().

Referenced by pow(), and powf().

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