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authorAnton Samokhvalov <[email protected]>2022-02-10 16:45:15 +0300
committerDaniil Cherednik <[email protected]>2022-02-10 16:45:15 +0300
commit72cb13b4aff9bc9cf22e49251bc8fd143f82538f (patch)
treeda2c34829458c7d4e74bdfbdf85dff449e9e7fb8 /contrib/libs/cxxsupp/builtins/ppc/gcc_qdiv.c
parent778e51ba091dc39e7b7fcab2b9cf4dbedfb6f2b5 (diff)
Restoring authorship annotation for Anton Samokhvalov <[email protected]>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/ppc/gcc_qdiv.c')
-rw-r--r--contrib/libs/cxxsupp/builtins/ppc/gcc_qdiv.c110
1 files changed, 55 insertions, 55 deletions
diff --git a/contrib/libs/cxxsupp/builtins/ppc/gcc_qdiv.c b/contrib/libs/cxxsupp/builtins/ppc/gcc_qdiv.c
index 70aa00b6440..0e010679148 100644
--- a/contrib/libs/cxxsupp/builtins/ppc/gcc_qdiv.c
+++ b/contrib/libs/cxxsupp/builtins/ppc/gcc_qdiv.c
@@ -1,55 +1,55 @@
-/* This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
- */
-
-/* long double __gcc_qdiv(long double x, long double y);
- * This file implements the PowerPC 128-bit double-double division operation.
- * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!)
- */
-
-#include "DD.h"
-
-long double __gcc_qdiv(long double a, long double b)
-{
- static const uint32_t infinityHi = UINT32_C(0x7ff00000);
- DD dst = { .ld = a }, src = { .ld = b };
-
- register double x = dst.s.hi, x1 = dst.s.lo,
- y = src.s.hi, y1 = src.s.lo;
-
- double yHi, yLo, qHi, qLo;
- double yq, tmp, q;
-
- q = x / y;
-
- /* Detect special cases */
- if (q == 0.0) {
- dst.s.hi = q;
- dst.s.lo = 0.0;
- return dst.ld;
- }
-
- const doublebits qBits = { .d = q };
- if (((uint32_t)(qBits.x >> 32) & infinityHi) == infinityHi) {
- dst.s.hi = q;
- dst.s.lo = 0.0;
- return dst.ld;
- }
-
- yHi = high26bits(y);
- qHi = high26bits(q);
-
- yq = y * q;
- yLo = y - yHi;
- qLo = q - qHi;
-
- tmp = LOWORDER(yq, yHi, yLo, qHi, qLo);
- tmp = (x - yq) - tmp;
- tmp = ((tmp + x1) - y1 * q) / y;
- x = q + tmp;
-
- dst.s.lo = (q - x) + tmp;
- dst.s.hi = x;
-
- return dst.ld;
-}
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* long double __gcc_qdiv(long double x, long double y);
+ * This file implements the PowerPC 128-bit double-double division operation.
+ * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!)
+ */
+
+#include "DD.h"
+
+long double __gcc_qdiv(long double a, long double b)
+{
+ static const uint32_t infinityHi = UINT32_C(0x7ff00000);
+ DD dst = { .ld = a }, src = { .ld = b };
+
+ register double x = dst.s.hi, x1 = dst.s.lo,
+ y = src.s.hi, y1 = src.s.lo;
+
+ double yHi, yLo, qHi, qLo;
+ double yq, tmp, q;
+
+ q = x / y;
+
+ /* Detect special cases */
+ if (q == 0.0) {
+ dst.s.hi = q;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ const doublebits qBits = { .d = q };
+ if (((uint32_t)(qBits.x >> 32) & infinityHi) == infinityHi) {
+ dst.s.hi = q;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ yHi = high26bits(y);
+ qHi = high26bits(q);
+
+ yq = y * q;
+ yLo = y - yHi;
+ qLo = q - qHi;
+
+ tmp = LOWORDER(yq, yHi, yLo, qHi, qLo);
+ tmp = (x - yq) - tmp;
+ tmp = ((tmp + x1) - y1 * q) / y;
+ x = q + tmp;
+
+ dst.s.lo = (q - x) + tmp;
+ dst.s.hi = x;
+
+ return dst.ld;
+}