gcc/testsuite/gdc.test/compilable/ctfe_math.d

   1 // COMPILABLE_MATH_TEST
   2 // Test CTFE builtins for std.math functions.
   3
   4 import std.math;
   5
   6 void main()
   7 {
   8     static assert(isClose(sin(2.0L), 0.9092974268));
   9     static assert(isClose(cos(2.0), -0.4161468365));
  10     static assert(isClose(tan(2.0f), -2.185040f, 1e-5));
  11     static assert(isClose(sqrt(2.0L), 1.4142135623));
  12     static assert(fabs(-2.0) == 2.0);
  13     static assert(ldexp(2.5f, 3) == 20.0f);
  14
  15     static assert(isNaN(real.init));
  16     static assert(isNaN(double.nan));
  17     static assert(!isNaN(float.infinity));
  18
  19     static assert(isInfinity(real.infinity));
  20     static assert(isInfinity(-double.infinity));
  21     static assert(!isInfinity(float.nan));
  22
  23     static assert(isFinite(1.0L));
  24     static assert(!isFinite(double.infinity));
  25     static assert(!isFinite(float.nan));
  26 }