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authorAnton Samokhvalov <pg83@yandex.ru>2022-02-10 16:45:15 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:45:15 +0300
commit72cb13b4aff9bc9cf22e49251bc8fd143f82538f (patch)
treeda2c34829458c7d4e74bdfbdf85dff449e9e7fb8 /contrib/libs/cxxsupp/builtins/multi3.c
parent778e51ba091dc39e7b7fcab2b9cf4dbedfb6f2b5 (diff)
downloadydb-72cb13b4aff9bc9cf22e49251bc8fd143f82538f.tar.gz
Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/multi3.c')
-rw-r--r--contrib/libs/cxxsupp/builtins/multi3.c116
1 files changed, 58 insertions, 58 deletions
diff --git a/contrib/libs/cxxsupp/builtins/multi3.c b/contrib/libs/cxxsupp/builtins/multi3.c
index e0d52d430b..5b3f558713 100644
--- a/contrib/libs/cxxsupp/builtins/multi3.c
+++ b/contrib/libs/cxxsupp/builtins/multi3.c
@@ -1,58 +1,58 @@
-/* ===-- multi3.c - Implement __multi3 -------------------------------------===
- *
- * 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 __multi3 for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
-
-#include "int_lib.h"
-
-#ifdef CRT_HAS_128BIT
-
-/* Returns: a * b */
-
-static
-ti_int
-__mulddi3(du_int a, du_int b)
-{
- twords r;
- const int bits_in_dword_2 = (int)(sizeof(di_int) * CHAR_BIT) / 2;
- const du_int lower_mask = (du_int)~0 >> bits_in_dword_2;
- r.s.low = (a & lower_mask) * (b & lower_mask);
- du_int t = r.s.low >> bits_in_dword_2;
- r.s.low &= lower_mask;
- t += (a >> bits_in_dword_2) * (b & lower_mask);
- r.s.low += (t & lower_mask) << bits_in_dword_2;
- r.s.high = t >> bits_in_dword_2;
- t = r.s.low >> bits_in_dword_2;
- r.s.low &= lower_mask;
- t += (b >> bits_in_dword_2) * (a & lower_mask);
- r.s.low += (t & lower_mask) << bits_in_dword_2;
- r.s.high += t >> bits_in_dword_2;
- r.s.high += (a >> bits_in_dword_2) * (b >> bits_in_dword_2);
- return r.all;
-}
-
-/* Returns: a * b */
-
-COMPILER_RT_ABI ti_int
-__multi3(ti_int a, ti_int b)
-{
- twords x;
- x.all = a;
- twords y;
- y.all = b;
- twords r;
- r.all = __mulddi3(x.s.low, y.s.low);
- r.s.high += x.s.high * y.s.low + x.s.low * y.s.high;
- return r.all;
-}
-
-#endif /* CRT_HAS_128BIT */
+/* ===-- multi3.c - Implement __multi3 -------------------------------------===
+ *
+ * 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 __multi3 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+#ifdef CRT_HAS_128BIT
+
+/* Returns: a * b */
+
+static
+ti_int
+__mulddi3(du_int a, du_int b)
+{
+ twords r;
+ const int bits_in_dword_2 = (int)(sizeof(di_int) * CHAR_BIT) / 2;
+ const du_int lower_mask = (du_int)~0 >> bits_in_dword_2;
+ r.s.low = (a & lower_mask) * (b & lower_mask);
+ du_int t = r.s.low >> bits_in_dword_2;
+ r.s.low &= lower_mask;
+ t += (a >> bits_in_dword_2) * (b & lower_mask);
+ r.s.low += (t & lower_mask) << bits_in_dword_2;
+ r.s.high = t >> bits_in_dword_2;
+ t = r.s.low >> bits_in_dword_2;
+ r.s.low &= lower_mask;
+ t += (b >> bits_in_dword_2) * (a & lower_mask);
+ r.s.low += (t & lower_mask) << bits_in_dword_2;
+ r.s.high += t >> bits_in_dword_2;
+ r.s.high += (a >> bits_in_dword_2) * (b >> bits_in_dword_2);
+ return r.all;
+}
+
+/* Returns: a * b */
+
+COMPILER_RT_ABI ti_int
+__multi3(ti_int a, ti_int b)
+{
+ twords x;
+ x.all = a;
+ twords y;
+ y.all = b;
+ twords r;
+ r.all = __mulddi3(x.s.low, y.s.low);
+ r.s.high += x.s.high * y.s.low + x.s.low * y.s.high;
+ return r.all;
+}
+
+#endif /* CRT_HAS_128BIT */