// 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. package strconv_test import ( "math" . "strconv" "testing" ) func TestMulByLog2Log10(t *testing.T) { for x := -1600; x <= +1600; x++ { iMath := MulByLog2Log10(x) fMath := int(math.Floor(float64(x) * math.Ln2 / math.Ln10)) if iMath != fMath { 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)) if iMath != fMath { t.Errorf("mulByLog10Log2(%d) failed: %d vs %d\n", x, iMath, fMath) } } }