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16200c7333
- changes tests to check that the real and imaginary part of the go complex division result is equal to the result gcc produces for c99 - changes complex division code to satisfy new complex division test - adds float functions isNan, isFinite, isInf, abs and copysign in the runtime package Fixes #14644. name old time/op new time/op delta Complex128DivNormal-4 21.8ns ± 6% 13.9ns ± 6% -36.37% (p=0.000 n=20+20) Complex128DivNisNaN-4 14.1ns ± 1% 15.0ns ± 1% +5.86% (p=0.000 n=20+19) Complex128DivDisNaN-4 12.5ns ± 1% 16.7ns ± 1% +33.79% (p=0.000 n=19+20) Complex128DivNisInf-4 10.1ns ± 1% 13.0ns ± 1% +28.25% (p=0.000 n=20+19) Complex128DivDisInf-4 11.0ns ± 1% 20.9ns ± 1% +90.69% (p=0.000 n=16+19) ComplexAlgMap-4 86.7ns ± 1% 86.8ns ± 2% ~ (p=0.804 n=20+20) Change-Id: I261f3b4a81f6cc858bc7ff48f6fd1b39c300abf0 Reviewed-on: https://go-review.googlesource.com/37441 Reviewed-by: Robert Griesemer <gri@golang.org>
44 lines
868 B
Go
44 lines
868 B
Go
// run cmplxdivide1.go
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Driver for complex division table defined in cmplxdivide1.go
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// For details, see the comment at the top of cmplxdivide.c.
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package main
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import (
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"fmt"
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"math"
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)
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func calike(a, b complex128) bool {
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if imag(a) != imag(b) && !(math.IsNaN(imag(a)) && math.IsNaN(imag(b))) {
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return false
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}
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if real(a) != real(b) && !(math.IsNaN(real(a)) && math.IsNaN(real(b))) {
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return false
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}
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return true
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}
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func main() {
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bad := false
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for _, t := range tests {
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x := t.f / t.g
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if !calike(x, t.out) {
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if !bad {
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fmt.Printf("BUG\n")
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bad = true
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}
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fmt.Printf("%v/%v: expected %v error; got %v\n", t.f, t.g, t.out, x)
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}
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}
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if bad {
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panic("cmplxdivide failed.")
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}
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}
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