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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) #define tspl (G.exec_builtin__tspl)
int (*to_xxx)(int);
var *tv; var *tv;
node *an[4]; node *an[4];
var *av[4]; var *av[4];
@ -2061,7 +2060,8 @@ static NOINLINE var *exec_builtin(node *op, var *res)
if ((uint32_t)nargs < (info >> 30)) if ((uint32_t)nargs < (info >> 30))
syntax_error(EMSG_TOO_FEW_ARGS); syntax_error(EMSG_TOO_FEW_ARGS);
switch (info & OPNMASK) { info &= OPNMASK;
switch (info) {
case B_a2: case B_a2:
#if ENABLE_FEATURE_AWK_LIBM #if ENABLE_FEATURE_AWK_LIBM
@ -2126,15 +2126,12 @@ static NOINLINE var *exec_builtin(node *op, var *res)
break; break;
case B_lo: case B_lo:
to_xxx = tolower;
goto lo_cont;
case B_up: case B_up:
to_xxx = toupper;
lo_cont:
s1 = s = xstrdup(as[0]); s1 = s = xstrdup(as[0]);
while (*s1) { 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++; s1++;
} }
setvar_p(res, s); setvar_p(res, s);

16
networking/interface.c
View File

@ -1242,10 +1242,8 @@ int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap)
c = *bufp++; c = *bufp++;
if (isdigit(c)) if (isdigit(c))
val = c - '0'; val = c - '0';
else if (c >= 'a' && c <= 'f') else if ((c|0x20) >= 'a' && (c|0x20) <= 'f')
val = c - 'a' + 10; val = (c|0x20) - ('a' - 10);
else if (c >= 'A' && c <= 'F')
val = c - 'A' + 10;
else { else {
errno = EINVAL; errno = EINVAL;
return -1; return -1;
@ -1254,17 +1252,15 @@ int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap)
c = *bufp; c = *bufp;
if (isdigit(c)) if (isdigit(c))
val |= c - '0'; val |= c - '0';
else if (c >= 'a' && c <= 'f') else if ((c|0x20) >= 'a' && (c|0x20) <= 'f')
val |= c - 'a' + 10; val |= (c|0x20) - ('a' - 10);
else if (c >= 'A' && c <= 'F') else if (c == ':' || c == '\0')
val |= c - 'A' + 10;
else if (c == ':' || c == 0)
val >>= 4; val >>= 4;
else { else {
errno = EINVAL; errno = EINVAL;
return -1; return -1;
} }
if (c != 0) if (c != '\0')
bufp++; bufp++;
*ptr++ = (unsigned char) (val & 0377); *ptr++ = (unsigned char) (val & 0377);
i++; i++;