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-rw-r--r--lib/builtins/floatdixf.c67
1 files changed, 31 insertions, 36 deletions
diff --git a/lib/builtins/floatdixf.c b/lib/builtins/floatdixf.c
index d39e81d7ca75..ad5deb2d4bf5 100644
--- a/lib/builtins/floatdixf.c
+++ b/lib/builtins/floatdixf.c
@@ -1,46 +1,41 @@
-/* ===-- floatdixf.c - Implement __floatdixf -------------------------------===
- *
- * 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 __floatdixf for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
+//===-- floatdixf.c - Implement __floatdixf -------------------------------===//
+//
+// 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 __floatdixf for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
#if !_ARCH_PPC
#include "int_lib.h"
-/* Returns: convert a to a long double, rounding toward even. */
+// Returns: convert a to a long double, rounding toward even.
-/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
- * di_int is a 64 bit integral type
- */
+// Assumption: long double is a IEEE 80 bit floating point type padded to 128
+// bits di_int is a 64 bit integral type
-/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
- * 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
- */
+// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee
+// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm
+// mmmm mmmm mmmm
-COMPILER_RT_ABI long double
-__floatdixf(di_int a)
-{
- if (a == 0)
- return 0.0;
- const unsigned N = sizeof(di_int) * CHAR_BIT;
- const di_int s = a >> (N-1);
- a = (a ^ s) - s;
- int clz = __builtin_clzll(a);
- int e = (N - 1) - clz ; /* exponent */
- long_double_bits fb;
- fb.u.high.s.low = ((su_int)s & 0x00008000) | /* sign */
- (e + 16383); /* exponent */
- fb.u.low.all = a << clz; /* mantissa */
- return fb.f;
+COMPILER_RT_ABI long double __floatdixf(di_int a) {
+ if (a == 0)
+ return 0.0;
+ const unsigned N = sizeof(di_int) * CHAR_BIT;
+ const di_int s = a >> (N - 1);
+ a = (a ^ s) - s;
+ int clz = __builtin_clzll(a);
+ int e = (N - 1) - clz; // exponent
+ long_double_bits fb;
+ fb.u.high.s.low = ((su_int)s & 0x00008000) | // sign
+ (e + 16383); // exponent
+ fb.u.low.all = a << clz; // mantissa
+ return fb.f;
}
-#endif /* !_ARCH_PPC */
+#endif // !_ARCH_PPC