[core] light_isupper(), light_islower()

more efficient char checks
(replace one comparision and one branch with one subtraction)

1 files changed, 2 insertions, 2 deletions

diff --git a/src/burl.c b/src/burl.c
index af7f18df..5e2e8196 100644
--- a/src/burl.c
+++ b/src/burl.c
@@ -463,7 +463,7 @@ static void burl_offset_tolower (buffer * const b, const size_t off)
 {
     /*(skips over all percent-encodings, including encoding of alpha chars)*/
     for (char *p = b->ptr+off; p[0]; ++p) {
-        if (p[0] >= 'A' && p[0] <= 'Z') p[0] |= 0x20;
+        if (light_isupper(p[0])) p[0] |= 0x20;
         else if (p[0]=='%' && light_isxdigit(p[1]) && light_isxdigit(p[2]))
             p+=2;
     }
@@ -474,7 +474,7 @@ static void burl_offset_toupper (buffer * const b, const size_t off)
 {
     /*(skips over all percent-encodings, including encoding of alpha chars)*/
     for (char *p = b->ptr+off; p[0]; ++p) {
-        if (p[0] >= 'a' && p[0] <= 'z') p[0] &= 0xdf;
+        if (light_islower(p[0])) p[0] &= 0xdf;
         else if (p[0]=='%' && light_isxdigit(p[1]) && light_isxdigit(p[2]))
             p+=2;
     }