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-rw-r--r--lib/builtins/ffsdi2.c50
1 files changed, 22 insertions, 28 deletions
diff --git a/lib/builtins/ffsdi2.c b/lib/builtins/ffsdi2.c
index a5ac9900f..9c1a24260 100644
--- a/lib/builtins/ffsdi2.c
+++ b/lib/builtins/ffsdi2.c
@@ -1,33 +1,27 @@
-/* ===-- ffsdi2.c - Implement __ffsdi2 -------------------------------------===
- *
- * The LLVM Compiler Infrastructure
- *
- * This file is dual licensed under the MIT and the University of Illinois Open
- * Source Licenses. See LICENSE.TXT for details.
- *
- * ===----------------------------------------------------------------------===
- *
- * This file implements __ffsdi2 for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
+//===-- ffsdi2.c - Implement __ffsdi2 -------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __ffsdi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
#include "int_lib.h"
-/* Returns: the index of the least significant 1-bit in a, or
- * the value zero if a is zero. The least significant bit is index one.
- */
+// Returns: the index of the least significant 1-bit in a, or
+// the value zero if a is zero. The least significant bit is index one.
-COMPILER_RT_ABI si_int
-__ffsdi2(di_int a)
-{
- dwords x;
- x.all = a;
- if (x.s.low == 0)
- {
- if (x.s.high == 0)
- return 0;
- return __builtin_ctz(x.s.high) + (1 + sizeof(si_int) * CHAR_BIT);
- }
- return __builtin_ctz(x.s.low) + 1;
+COMPILER_RT_ABI si_int __ffsdi2(di_int a) {
+ dwords x;
+ x.all = a;
+ if (x.s.low == 0) {
+ if (x.s.high == 0)
+ return 0;
+ return __builtin_ctz(x.s.high) + (1 + sizeof(si_int) * CHAR_BIT);
+ }
+ return __builtin_ctz(x.s.low) + 1;
}