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small optimizations of toupper/tolower

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function                                             old     new   delta
in_ib                                                191     172     -19

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2009-10-23 13:03:59 +02:00
parent f2cbb03a37
commit 56b3eec162
2 changed files with 11 additions and 18 deletions
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13
editors/awk.c
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@ -2031,7 +2031,6 @@ static NOINLINE var *exec_builtin(node *op, var *res)
{
#define tspl (G.exec_builtin__tspl)
int (*to_xxx)(int);
var *tv;
node *an[4];
var *av[4];
@ -2061,7 +2060,8 @@ static NOINLINE var *exec_builtin(node *op, var *res)
if ((uint32_t)nargs < (info >> 30))
syntax_error(EMSG_TOO_FEW_ARGS);
switch (info & OPNMASK) {
info &= OPNMASK;
switch (info) {
case B_a2:
#if ENABLE_FEATURE_AWK_LIBM
@ -2126,15 +2126,12 @@ static NOINLINE var *exec_builtin(node *op, var *res)
break;
case B_lo:
to_xxx = tolower;
goto lo_cont;
case B_up:
to_xxx = toupper;
lo_cont:
s1 = s = xstrdup(as[0]);
while (*s1) {
*s1 = (*to_xxx)(*s1);
//*s1 = (info == B_up) ? toupper(*s1) : tolower(*s1);
if ((unsigned char)((*s1 | 0x20) - 'a') <= ('z' - 'a'))
*s1 = (info == B_up) ? (*s1 & 0xdf) : (*s1 | 0x20);
s1++;
}
setvar_p(res, s);