The _USE_MATH_DEFINES macro is only needed on Windows to expose math
constants like M_PI in math.h/cmath.

Jerome Hue authored 2 weeks ago and Olivier BICHLER committed 1 week ago

Compare the result of surrogate gradient to the real Atan operator.

Grégoire Kubler authored 3 weeks ago and Olivier BICHLER committed 1 week ago

set setupExpandTest as static function
header cleanup
removed "using namespace" in favor of "namespace{}" directive

This reverts commit ea9a0a70.