Fixup C++ style comments are not allowed in ISO C90 to classic C style.
llvm-svn: 78152
diff --git a/compiler-rt/lib/clzsi2.c b/compiler-rt/lib/clzsi2.c
index 52062ab..7e14af2 100644
--- a/compiler-rt/lib/clzsi2.c
+++ b/compiler-rt/lib/clzsi2.c
@@ -1,51 +1,53 @@
-//===-- clzsi2.c - Implement __clzsi2 -------------------------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements __clzsi2 for the compiler_rt library.
-//
-//===----------------------------------------------------------------------===//
+/* ===-- clzsi2.c - Implement __clzsi2 -------------------------------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __clzsi2 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
#include "int_lib.h"
-// Returns: the number of leading 0-bits
+/* Returns: the number of leading 0-bits */
-// Precondition: a != 0
+/* Precondition: a != 0 */
si_int
__clzsi2(si_int a)
{
su_int x = (su_int)a;
- si_int t = ((x & 0xFFFF0000) == 0) << 4; // if (x is small) t = 16 else 0
- x >>= 16 - t; // x = [0 - 0xFFFF]
- su_int r = t; // r = [0, 16]
- // return r + clz(x)
+ si_int t = ((x & 0xFFFF0000) == 0) << 4; /* if (x is small) t = 16 else 0 */
+ x >>= 16 - t; /* x = [0 - 0xFFFF] */
+ su_int r = t; /* r = [0, 16] */
+ /* return r + clz(x) */
t = ((x & 0xFF00) == 0) << 3;
- x >>= 8 - t; // x = [0 - 0xFF]
- r += t; // r = [0, 8, 16, 24]
- // return r + clz(x)
+ x >>= 8 - t; /* x = [0 - 0xFF] */
+ r += t; /* r = [0, 8, 16, 24] */
+ /* return r + clz(x) */
t = ((x & 0xF0) == 0) << 2;
- x >>= 4 - t; // x = [0 - 0xF]
- r += t; // r = [0, 4, 8, 12, 16, 20, 24, 28]
- // return r + clz(x)
+ x >>= 4 - t; /* x = [0 - 0xF] */
+ r += t; /* r = [0, 4, 8, 12, 16, 20, 24, 28] */
+ /* return r + clz(x) */
t = ((x & 0xC) == 0) << 1;
- x >>= 2 - t; // x = [0 - 3]
- r += t; // r = [0 - 30] and is even
- // return r + clz(x)
-// switch (x)
-// {
-// case 0:
-// return r + 2;
-// case 1:
-// return r + 1;
-// case 2:
-// case 3:
-// return r;
-// }
+ x >>= 2 - t; /* x = [0 - 3] */
+ r += t; /* r = [0 - 30] and is even */
+ /* return r + clz(x) */
+/* switch (x)
+ * {
+ * case 0:
+ * return r + 2;
+ * case 1:
+ * return r + 1;
+ * case 2:
+ * case 3:
+ * return r;
+ * }
+ */
return r + ((2 - x) & -((x & 2) == 0));
}