tree beff732c2b46a0bf24cc56971610d86d82d03262
parent fc1b33a0ff235980b0f81bc7ba6e7378e9fc96cf
author Nigel Tao <nigeltao@golang.org> 1593921126 +1000
committer Nigel Tao <nigeltao@golang.org> 1593921529 +1000

Refine parse_number_f64's powers_of_10 table

Refine means changing the base-10 exponents from "-348 ..= +340 stepping
by 8" to "-326 ..= +310 stepping by 1".

Binary size, before:
15992 gen/lib/c/clang-5.0-dynamic/wuffs-base-f64conv.lo
16232 gen/lib/c/clang-5.0-static/wuffs-base-f64conv.o
17384 gen/lib/c/gcc-dynamic/wuffs-base-f64conv.lo
17384 gen/lib/c/gcc-static/wuffs-base-f64conv.o

After:
22232 gen/lib/c/clang-5.0-dynamic/wuffs-base-f64conv.lo
22408 gen/lib/c/clang-5.0-static/wuffs-base-f64conv.o
23816 gen/lib/c/gcc-dynamic/wuffs-base-f64conv.lo
23816 gen/lib/c/gcc-static/wuffs-base-f64conv.o

$ g++ -O3 script/process-json-numbers.c
$ time ./a.out -parse-number-f64 < citylots.json
Before/After:
real	0m1.455s
real	0m1.432s

citylots.json is from github.com/zemirco/sf-city-lots-json