Unbewohnte
3 years ago
4 changed files with 61 additions and 21 deletions
@ -0,0 +1,6 @@
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package util |
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// Tells if bit is set in given byte
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func IsSet(n byte, bitN int) bool { |
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return n&byte(1<<bitN-1) != 0 |
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} |
@ -0,0 +1,14 @@
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package util |
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import "testing" |
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func TestIsSet(t *testing.T) { |
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testBytes := []byte{1 << 0, 1 << 1, 1 << 2, 1 << 3} |
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for index, testByte := range testBytes { |
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if !IsSet(testByte, index+1) { |
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t.Errorf("IsSet failed: expected %dth bit of %d to be %v; got %v", |
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index+1, testByte, true, IsSet(testByte, index+1)) |
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} |
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} |
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} |
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