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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2009-10-23 13:03:59 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2009-10-23 13:03:59 +0200 |
| commit | 56b3eec162c135d69e7b0bee70f30cf6ec31aae5 (patch) | |
| tree | 03f73029b01cfa51e900a15f3ab5e12337ed5592 /networking/interface.c | |
| parent | f2cbb03a378aa48f2e08b64877d54da3fab4ea6a (diff) | |
| download | busybox-56b3eec162c135d69e7b0bee70f30cf6ec31aae5.tar.gz | |
small optimizations of toupper/tolower
function old new delta
in_ib 191 172 -19
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/interface.c')
| -rw-r--r-- | networking/interface.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/networking/interface.c b/networking/interface.c index fe6b23dbc..b64d24a58 100644 --- a/networking/interface.c +++ b/networking/interface.c @@ -1242,10 +1242,8 @@ int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap) c = *bufp++; if (isdigit(c)) val = c - '0'; - else if (c >= 'a' && c <= 'f') - val = c - 'a' + 10; - else if (c >= 'A' && c <= 'F') - val = c - 'A' + 10; + else if ((c|0x20) >= 'a' && (c|0x20) <= 'f') + val = (c|0x20) - ('a' - 10); else { errno = EINVAL; return -1; @@ -1254,17 +1252,15 @@ int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap) c = *bufp; if (isdigit(c)) val |= c - '0'; - else if (c >= 'a' && c <= 'f') - val |= c - 'a' + 10; - else if (c >= 'A' && c <= 'F') - val |= c - 'A' + 10; - else if (c == ':' || c == 0) + else if ((c|0x20) >= 'a' && (c|0x20) <= 'f') + val |= (c|0x20) - ('a' - 10); + else if (c == ':' || c == '\0') val >>= 4; else { errno = EINVAL; return -1; } - if (c != 0) + if (c != '\0') bufp++; *ptr++ = (unsigned char) (val & 0377); i++; |