Bug 12644 – Some std.math functions are not yet @nogc

void main() @nogc { import std.math: floor, ceil, round, asin, atan2; auto x = floor(2.2); auto y = ceil(2.2); auto z = round(2.2); auto r1 = asin(1.0); auto r2 = atan2(1.0, 1.0); } DMD 2.066alpha gives: test.d(3,19): Error: @nogc function 'D main' cannot call non-@nogc function 'std.math.floor' test.d(4,18): Error: @nogc function 'D main' cannot call non-@nogc function 'std.math.ceil' test.d(5,19): Error: @nogc function 'D main' cannot call non-@nogc function 'std.math.round' test.d(6,19): Error: @nogc function 'D main' cannot call non-@nogc function 'std.math.asin' test.d(7,20): Error: @nogc function 'D main' cannot call non-@nogc function 'std.math.atan2'

Also: void main() @nogc { import std.math: log, acos; auto x1 = log(2.2); auto x2 = acos(0.0); }

Fixed.