| // Copyright 2021 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| func TestMulByLog2Log10(t *testing.T) { |
| for x := -1600; x <= +1600; x++ { |
| iMath := MulByLog2Log10(x) |
| fMath := int(math.Floor(float64(x) * math.Ln2 / math.Ln10)) |
| t.Errorf("mulByLog2Log10(%d) failed: %d vs %d\n", x, iMath, fMath) |
| func TestMulByLog10Log2(t *testing.T) { |
| for x := -500; x <= +500; x++ { |
| iMath := MulByLog10Log2(x) |
| fMath := int(math.Floor(float64(x) * math.Ln10 / math.Ln2)) |
| t.Errorf("mulByLog10Log2(%d) failed: %d vs %d\n", x, iMath, fMath) |