`pow` only works if both arguments have the same type

[BenWeber42]

See:

dawn/dawn/src/driver-includes/math.hpp

Lines 99 to 110 in a861f9e

	/**
	* @brief Raise @c x to power @c y.
	*
	* @param x Base value
	* @param y Exponent value
	*
	* @see http://en.cppreference.com/w/cpp/numeric/math/fmod
	*/
	template <typename T>
	GT_FUNCTION T pow(const T x, const T y) {
	return ::pow(x, y);
	}

Can lead to errors like:

intro_cxx-naive.cpp:37:89: error: no matching function for call to ‘pow(dawn::float_type, int)’
   37 |  gridtools::dawn::math::pow((::dawn::float_type) 2.0, (int) 1);

C++'s pow is defined for this case:
https://en.cppreference.com/w/cpp/numeric/math/pow