zig

fork of https://codeberg.org/ziglang/zig
Log | Files | Refs | README | LICENSE

divsf3_test.zig (982B) - Raw

      1 // Ported from:
      2 //
      3 // https://github.com/llvm/llvm-project/commit/d674d96bc56c0f377879d01c9d8dfdaaa7859cdb/compiler-rt/test/builtins/Unit/divsf3_test.c
      4 
      5 const __divsf3 = @import("divsf3.zig").__divsf3;
      6 const testing = @import("std").testing;
      7 
      8 fn compareResultF(result: f32, expected: u32) bool {
      9     const rep: u32 = @bitCast(result);
     10 
     11     if (rep == expected) {
     12         return true;
     13     }
     14     // test other possible NaN representation(signal NaN)
     15     else if (expected == 0x7fc00000) {
     16         if ((rep & 0x7f800000) == 0x7f800000 and
     17             (rep & 0x7fffff) > 0)
     18         {
     19             return true;
     20         }
     21     }
     22     return false;
     23 }
     24 
     25 fn test__divsf3(a: f32, b: f32, expected: u32) !void {
     26     const x = __divsf3(a, b);
     27     const ret = compareResultF(x, expected);
     28     try testing.expect(ret == true);
     29 }
     30 
     31 test "divsf3" {
     32     try test__divsf3(1.0, 3.0, 0x3EAAAAAB);
     33     try test__divsf3(2.3509887e-38, 2.0, 0x00800000);
     34     try test__divsf3(1.0, 0x1.fffffep-1, 0x3f800001);
     35 }