Acosh, Asinh, Atanh, Ceil, Floor, Trunc, Mod and Remainder affected. These changes add some non-finite arguments and results (and -0.0 results).
R=rsc, golang-dev
CC=golang-dev
https://golang.org/cl/5469046
Max returns +Inf if x or y is +Inf; else it returns NaN if either x or y is NaN. Max(-0, -0) returns -0.
Min returns -Inf if x or y is -Inf; else it returns NaN if either x or y is NaN. Min(+0, -0) returns -0.
Dim(+Inf, +Inf) = NaN, Dim(-Inf, -Inf) = NaN and Dim(NaN, anything) = NaN.
Also, change "conditions" to "cases" for Sin (missed it in previous CL).
R=rsc, dave
CC=golang-dev
https://golang.org/cl/5437137
Sincos via sincos.go is 35.4 ns/op, via sincos_amd64.s is 37.4 ns/op on 2.53 GHz Intel Core 2 Duo (Mac OS X).
R=rsc, golang-dev
CC=golang-dev
https://golang.org/cl/5447045
This change adds the second aspect to the conversion code, the
use of large divisiors (powers of big base) to greatly speed up
the divsion of large numbers. Speedups of 30x are common in the
large cases. Also includes new tests and tuning code for the
key internal parameters.
R=gri
CC=golang-dev
https://golang.org/cl/5438058
No need for creating a new nat each time.
Per Roger Peppe's suggestion; assuming
nat(nil) produces better code than nat{}.
R=rsc
CC=golang-dev
https://golang.org/cl/5375092
Converting from polynomial constants to counted array speeds up Lgamma from 51.3 to 37.7 ns/op. Variables renamed in Gamma to avoid overlap in Lgamma.
R=rsc, golang-dev
CC=golang-dev
https://golang.org/cl/5359045
This contains the files that required handiwork, mostly
Makefiles with updated TARGs, plus the two packages
with modified package names.
html/template/doc.go needs a separate edit pass.
test/fixedbugs/bug358.go is not legal go so gofix fails on it.
R=rsc
CC=golang-dev
https://golang.org/cl/5340050
Having the compiler count the number of array elements speeds up Gamma from 63.7 to 56.6 ns/op.
R=rsc, golang-dev, r
CC=golang-dev
https://golang.org/cl/5362043
This is Go 1 package renaming CL #2.
This one merely moves the source; the import strings will be
changed after the next weekly release.
exp/template/html -> html/template
big -> math/big
cmath -> math/cmplx
rand -> math/rand
syslog -> log/syslog
The only edits are in Makefiles and deps.bash.
Note that this CL moves exp/template/html out of exp. I decided
to do that so all the renamings can be done together, even though
the API (and that of template, for that matter) is still fluid.
R=r, rsc
CC=golang-dev
https://golang.org/cl/5332053
The letter is a holdover from C and unnecessary in Go.
Gofix module included.
Fixes#2306.
R=golang-dev, gri, dsymonds
CC=golang-dev
https://golang.org/cl/5158043
Pow10 failed for MinInt32 (endless loop until out of
memory). Fix by returning 0 and +Inf for all arguments
where the result is not representable in a float64.
Fixes#2159.
R=rsc
CC=golang-dev
https://golang.org/cl/4930041
5a: add SQRTF and SQRTD
5l: add ASQRTF and ASQRTD
Use ARMv7 VFP VSQRT instruction to speed up math.Sqrt
R=rsc, dave, m
CC=golang-dev
https://golang.org/cl/4551082
Also:
* document special cases for Frexp and Ldexp
* handle ±Inf in Ldexp
* correctly return -0 on underflow in Ldexp
* test special cases for Ldexp
* test boundary cases for Frexp, Ilogb, Ldexp, and Logb
R=rsc
CC=golang-dev
https://golang.org/cl/3676041
Note:
* Exp2 doesn't have a special case for very small arguments
* Exp2 hasn't been subject to a proper error analysis
Also:
* add tests for Exp2 with integer argument
* always test Go versions of Exp and Exp2
R=rsc
CC=Charlie Dorian, PeterGo, golang-dev
https://golang.org/cl/3481041
The panic NaN was a translation error.
The earliest version said panic "return sys.NaN()",
and when sys.NaN came along, it changed
to "panic sys.NaN()" instead of "return sys.NaN()".
R=r
CC=golang-dev
https://golang.org/cl/2106049
* Code for assignment, conversions now mirrors spec.
* Changed some snprint -> smprint.
* Renamed runtime functions to separate
interface conversions from type assertions:
convT2I, assertI2T, etc.
* Correct checking of \U sequences.
Fixes#840.
Fixes#830.
Fixes#778.
R=ken2
CC=golang-dev
https://golang.org/cl/1303042
