Martin Möhrmann
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16200c7333
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runtime: make complex division c99 compatible
- 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>
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2017-03-15 22:45:17 +00:00 |
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Shenghou Ma
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e2662835b8
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test: use testlib in a few more cases
Introduce a new skip cmd.
R=golang-dev, bradfitz, iant, iant
CC=golang-dev
https://golang.org/cl/5868048
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2012-03-22 02:14:44 +08:00 |
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Russ Cox
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f2b5a07453
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delete float, complex - code changes
also:
cmplx -> complex
float64(1.0) -> 1.0
float64(1) -> 1.0
R=gri, r, gri1, r2
CC=golang-dev
https://golang.org/cl/3991043
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2011-01-19 23:09:00 -05:00 |
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Russ Cox
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47c85ec97a
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test: override gcc bug when preparing complex divide tables
R=iant
CC=golang-dev
https://golang.org/cl/1666048
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2010-06-30 23:34:27 -07:00 |
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Russ Cox
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21ff75bc0e
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complex divide: match C99 implementation
R=iant, ken2, r, r2, ken3
CC=golang-dev
https://golang.org/cl/1686044
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2010-06-18 15:46:00 -07:00 |
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