src/mathutils.c: simplify aubio_is_power_of_two, thanks to Arturo Castro

diff --git a/src/mathutils.c b/src/mathutils.c
index d443fc1b89db221e589e76cc08920a1bb7e62fdb..2bf3be75764609a516c4a81b177b74d838e9970c 100644 (file)
--- a/src/mathutils.c
+++ b/src/mathutils.c
@@ -441,12 +441,9 @@ aubio_is_power_of_two (uint_t a)
 uint_t
 aubio_next_power_of_two (uint_t a)
 {
-  uint_t i;
-  a--;
-  for (i = 0; i < sizeof (uint_t) * CHAR_BIT; i++) {
-    a = a | a >> 1;
-  }
-  return a + 1;
+  uint_t i = 1;
+  while (i < a) i <<= 1;
+  return i;
 }
 
 smpl_t