ftoaryu_test.go

Documentation: strconv

     1  // Copyright 2021 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package strconv_test
     6  
     7  import (
     8  	"math"
     9  	. "strconv"
    10  	"testing"
    11  )
    12  
    13  func TestMulByLog2Log10(t *testing.T) {
    14  	for x := -1600; x <= +1600; x++ {
    15  		iMath := MulByLog2Log10(x)
    16  		fMath := int(math.Floor(float64(x) * math.Ln2 / math.Ln10))
    17  		if iMath != fMath {
    18  			t.Errorf("mulByLog2Log10(%d) failed: %d vs %d\n", x, iMath, fMath)
    19  		}
    20  	}
    21  }
    22  
    23  func TestMulByLog10Log2(t *testing.T) {
    24  	for x := -500; x <= +500; x++ {
    25  		iMath := MulByLog10Log2(x)
    26  		fMath := int(math.Floor(float64(x) * math.Ln10 / math.Ln2))
    27  		if iMath != fMath {
    28  			t.Errorf("mulByLog10Log2(%d) failed: %d vs %d\n", x, iMath, fMath)
    29  		}
    30  	}
    31  }
    32
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