Convert a number of places in core and plugins to use the BIT_N() macro instead of 1<<n. Speeds up things on SH1, and also reduces core binsize. Most notable speedups: 1 bit lcd driver: drawpixel +20%, drawline + 27%, hline +5%; jpeg viewer: +8% for 1/8 scaling. Other targets are unaffected.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21205 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 3 insertions, 3 deletions

diff --git a/apps/replaygain.c b/apps/replaygain.c
index 8f6fe4c738..90944f91d0 100644
--- a/apps/replaygain.c
+++ b/apps/replaygain.c
@@ -134,12 +134,12 @@ static long fp_div(long x, long y)
         y = -y;
     }
 
-    while ((x & (1 << (30 - msb))) == 0)
+    while ((x & BIT_N(30 - msb)) == 0)
     {
         msb++;
     }
 
-    while ((y & (1 << lsb)) == 0)
+    while ((y & BIT_N(lsb)) == 0)
     {
         lsb++;
     }
@@ -216,7 +216,7 @@ static long fp_exp10(long x)
 static long fp_atof(const char* s, int precision)
 {
     long int_part = 0;
-    long int_one = 1 << precision;
+    long int_one = BIT_N(precision);
     long frac_part = 0;
     long frac_count = 0;
     long frac_max = ((precision * 4) + 12) / 13;