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divdf3_test.zig (1051B) - Raw

      1 // Ported from:
      2 //
      3 // https://github.com/llvm/llvm-project/commit/d674d96bc56c0f377879d01c9d8dfdaaa7859cdb/compiler-rt/test/builtins/Unit/divdf3_test.c
      4 
      5 const __divdf3 = @import("divdf3.zig").__divdf3;
      6 const testing = @import("std").testing;
      7 
      8 fn compareResultD(result: f64, expected: u64) bool {
      9     const rep: u64 = @bitCast(result);
     10 
     11     if (rep == expected) {
     12         return true;
     13     }
     14     // test other possible NaN representation(signal NaN)
     15     else if (expected == 0x7ff8000000000000) {
     16         if ((rep & 0x7ff0000000000000) == 0x7ff0000000000000 and
     17             (rep & 0xfffffffffffff) > 0)
     18         {
     19             return true;
     20         }
     21     }
     22     return false;
     23 }
     24 
     25 fn test__divdf3(a: f64, b: f64, expected: u64) !void {
     26     const x = __divdf3(a, b);
     27     const ret = compareResultD(x, expected);
     28     try testing.expect(ret == true);
     29 }
     30 
     31 test "divdf3" {
     32     try test__divdf3(1.0, 3.0, 0x3fd5555555555555);
     33     try test__divdf3(4.450147717014403e-308, 2.0, 0x10000000000000);
     34     try test__divdf3(1.0, 0x1.fffffffffffffp-1, 0x3ff0000000000001);
     35 }