module s2.util.math.s2const; import std.math; enum double M_PI = cast(double) PI; enum double M_PI_2 = cast(double) PI_2; enum double M_PI_4 = cast(double) PI_4; enum double M_SQRT1_2 = cast(double) SQRT1_2; enum double M_SQRT2 = cast(double) SQRT2;