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math/cmplx: make error tolerance test function of expected value

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Copy math package CL 12230 to cmplx package.

Change-Id: I3345b782b84b5b98e2b6a60d8774c7e7cede2891
Reviewed-on: https://go-review.googlesource.com/15500
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Charlie Dorian 2015-10-06 23:16:47 -04:00 committed by Ian Lance Taylor
parent bf3bf092d1
commit 1ef9b5a5b9
1 changed files with 6 additions and 4 deletions
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10
src/math/cmplx/cmath_test.go
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@ -438,8 +438,10 @@ func tolerance(a, b, e float64) bool {
d = -d
}
if a != 0 {
e = e * a
// note: b is correct (expected) value, a is actual value.
// make error tolerance a fraction of b, not a.
if b != 0 {
e = e * b
if e < 0 {
e = -e
}
@ -460,8 +462,8 @@ func alike(a, b float64) bool {
func cTolerance(a, b complex128, e float64) bool {
d := Abs(a - b)
if a != 0 {
e = e * Abs(a)
if b != 0 {
e = e * Abs(b)
if e < 0 {
e = -e
}