Robert Griesemer
2f480b10e2
pidigits: ~10% performance win by using adds instead of shifts
...
user time for pidigits -s -n=10000:
6.466s w/ adds
7.138s w/ shifts
R=rsc
CC=golang-dev
https://golang.org/cl/1021041
2010-04-27 14:06:53 -07:00
Evan Shaw
76cbbc8a95
big: Add Lsh and Value; convert pidigits to use big
...
This yields a pretty significant performance boost to pidigits and there are still some improvements to be made. Here are my numbers:
amd64 w/ bignum:
pidigits 10000
gcc -O2 pidigits.c -lgmp 2.10u 0.00s 2.10r
gc pidigits 22.92u 0.02s 22.97r
gc_B pidigits 22.62u 0.00s 22.65r
amd64 w/ big:
pidigits 10000
gcc -O2 pidigits.c -lgmp 2.09u 0.02s 2.11r
gc pidigits 12.68u 0.04s 12.72r
gc_B pidigits 12.71u 0.03s 12.75r
386 w/ bignum:
pidigits 10000
gcc -O2 pidigits.c -lgmp 2.09u 0.00s 2.09r
gc pidigits 44.30u 0.01s 44.35r
gc_B pidigits 44.29u 0.03s 44.35r
386 w/ big:
pidigits 10000
gcc -O2 pidigits.c -lgmp 2.10u 0.00s 2.10r
gc pidigits 22.70u 0.06s 22.79r
gc_B pidigits 22.80u 0.09s 22.91r
R=rsc, gri
CC=golang-dev
https://golang.org/cl/881050
2010-04-20 20:39:36 -07:00
Rob Pike
d2fc5d68da
Change type of Printf's args to ... interface{}
...
R=rsc
CC=golang-dev
https://golang.org/cl/197043
2010-02-02 10:53:37 +11:00
Robert Griesemer
45ca9f7a9e
1) Change default gofmt default settings for
...
parsing and printing to new syntax.
Use -oldparser to parse the old syntax,
use -oldprinter to print the old syntax.
2) Change default gofmt formatting settings
to use tabs for indentation only and to use
spaces for alignment. This will make the code
alignment insensitive to an editor's tabwidth.
Use -spaces=false to use tabs for alignment.
3) Manually changed src/exp/parser/parser_test.go
so that it doesn't try to parse the parser's
source files using the old syntax (they have
new syntax now).
4) gofmt -w src misc test/bench
5th and last set of files.
R=rsc
CC=golang-dev
https://golang.org/cl/180050
2009-12-15 15:41:46 -08:00
Russ Cox
19dae0799b
gofmt -r 'α[β:len(α)] -> α[β:]' -w test/bench
...
except chameneosredux which i know is being edited
require gofmt for test/bench
R=r
https://golang.org/cl/157110
2009-11-20 13:11:42 -08:00
Robert Griesemer
0dbd8971a2
- use in-place bignum operations where available
...
- runs approx. 30% faster
R=r
DELTA=24 (10 added, 2 deleted, 12 changed)
OCL=32984
CL=33005
2009-08-10 17:44:46 -07:00
Robert Griesemer
081bc69cde
- initial version of pidigits.go benchmark
...
- extra bignum.go functionality for pidigits.go
- tuned bignum multiplication
R=r
DELTA=193 (186 added, 0 deleted, 7 changed)
OCL=32852
CL=32856
2009-08-06 18:16:51 -07:00
