From 179766aa2ef06df854bc1d9616bf6f00ce49b7f9 Mon Sep 17 00:00:00 2001 From: Natanael Copa Date: Tue, 30 May 2017 14:23:24 +0200 Subject: towupper/towlower: fast path for ascii chars Make a fast path for ascii chars which is assumed to be the most common case. This has significant performance benefit on xml json and similar --- src/ctype/towctrans.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'src/ctype') diff --git a/src/ctype/towctrans.c b/src/ctype/towctrans.c index 6af61875..cf13a862 100644 --- a/src/ctype/towctrans.c +++ b/src/ctype/towctrans.c @@ -1,3 +1,4 @@ +#include #include #include "libc.h" @@ -9,7 +10,6 @@ static const struct { signed char lower; unsigned char len; } casemaps[] = { - CASEMAP('A','Z','a'), CASEMAP(0xc0,0xde,0xe0), CASELACE(0x0100,0x012e), @@ -257,12 +257,12 @@ static wchar_t __towcase(wchar_t wc, int lower) wint_t towupper(wint_t wc) { - return __towcase(wc, 0); + return (unsigned)wc < 128 ? toupper(wc) : __towcase(wc, 0); } wint_t towlower(wint_t wc) { - return __towcase(wc, 1); + return (unsigned)wc < 128 ? tolower(wc) : __towcase(wc, 1); } wint_t __towupper_l(wint_t c, locale_t l) -- cgit v1.2.1