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authorJordan Rupprecht <rupprecht@google.com>2019-05-14 21:58:59 +0000
committerJordan Rupprecht <rupprecht@google.com>2019-05-14 21:58:59 +0000
commitb6bc976d7be8ee56d3be4b6dbd2f3ab0a4021c86 (patch)
treef5ed5db8cb5d237a073ea00c4d4cd63153a16a6c /lib/builtins/ppc/floatditf.c
parent05342ccc9cff16425c0a831fddd510879544a0bf (diff)
parent098ca93185735ec3687106d0967a70fc99a85059 (diff)
downloadcompiler-rt-google/stable.tar.gz
Creating branches/google/stable and tags/google/stable/2019-05-14 from r360103google/stable
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/branches/google/stable@360714 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/builtins/ppc/floatditf.c')
-rw-r--r--lib/builtins/ppc/floatditf.c57
1 files changed, 27 insertions, 30 deletions
diff --git a/lib/builtins/ppc/floatditf.c b/lib/builtins/ppc/floatditf.c
index beabdd017..4c365418f 100644
--- a/lib/builtins/ppc/floatditf.c
+++ b/lib/builtins/ppc/floatditf.c
@@ -1,36 +1,33 @@
-/* This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
- */
+// 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
-/* long double __floatditf(long long x); */
-/* This file implements the PowerPC long long -> long double conversion */
+// long double __floatditf(long long x);
+// This file implements the PowerPC long long -> long double conversion
#include "DD.h"
long double __floatditf(int64_t a) {
-
- static const double twop32 = 0x1.0p32;
- static const double twop52 = 0x1.0p52;
-
- doublebits low = { .d = twop52 };
- low.x |= a & UINT64_C(0x00000000ffffffff); /* 0x1.0p52 + low 32 bits of a. */
-
- const double high_addend = (double)((int32_t)(a >> 32))*twop32 - twop52;
-
- /* At this point, we have two double precision numbers
- * high_addend and low.d, and we wish to return their sum
- * as a canonicalized long double:
- */
-
- /* This implementation sets the inexact flag spuriously.
- * This could be avoided, but at some substantial cost.
- */
-
- DD result;
-
- result.s.hi = high_addend + low.d;
- result.s.lo = (high_addend - result.s.hi) + low.d;
-
- return result.ld;
-
+
+ static const double twop32 = 0x1.0p32;
+ static const double twop52 = 0x1.0p52;
+
+ doublebits low = {.d = twop52};
+ low.x |= a & UINT64_C(0x00000000ffffffff); // 0x1.0p52 + low 32 bits of a.
+
+ const double high_addend = (double)((int32_t)(a >> 32)) * twop32 - twop52;
+
+ // At this point, we have two double precision numbers
+ // high_addend and low.d, and we wish to return their sum
+ // as a canonicalized long double:
+
+ // This implementation sets the inexact flag spuriously.
+ // This could be avoided, but at some substantial cost.
+
+ DD result;
+
+ result.s.hi = high_addend + low.d;
+ result.s.lo = (high_addend - result.s.hi) + low.d;
+
+ return result.ld;
}