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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/mulosi4.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/mulosi4.c')
-rw-r--r--contrib/libs/cxxsupp/builtins/mulosi4.c116
1 files changed, 58 insertions, 58 deletions
diff --git a/contrib/libs/cxxsupp/builtins/mulosi4.c b/contrib/libs/cxxsupp/builtins/mulosi4.c
index 422528085c..69ab084f9d 100644
--- a/contrib/libs/cxxsupp/builtins/mulosi4.c
+++ b/contrib/libs/cxxsupp/builtins/mulosi4.c
@@ -1,58 +1,58 @@
-/*===-- mulosi4.c - Implement __mulosi4 -----------------------------------===
- *
- * 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 __mulosi4 for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
-
-#include "int_lib.h"
-
-/* Returns: a * b */
-
-/* Effects: sets *overflow to 1 if a * b overflows */
-
-COMPILER_RT_ABI si_int
-__mulosi4(si_int a, si_int b, int* overflow)
-{
- const int N = (int)(sizeof(si_int) * CHAR_BIT);
- const si_int MIN = (si_int)1 << (N-1);
- const si_int MAX = ~MIN;
- *overflow = 0;
- si_int result = a * b;
- if (a == MIN)
- {
- if (b != 0 && b != 1)
- *overflow = 1;
- return result;
- }
- if (b == MIN)
- {
- if (a != 0 && a != 1)
- *overflow = 1;
- return result;
- }
- si_int sa = a >> (N - 1);
- si_int abs_a = (a ^ sa) - sa;
- si_int sb = b >> (N - 1);
- si_int abs_b = (b ^ sb) - sb;
- if (abs_a < 2 || abs_b < 2)
- return result;
- if (sa == sb)
- {
- if (abs_a > MAX / abs_b)
- *overflow = 1;
- }
- else
- {
- if (abs_a > MIN / -abs_b)
- *overflow = 1;
- }
- return result;
-}
+/*===-- mulosi4.c - Implement __mulosi4 -----------------------------------===
+ *
+ * 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 __mulosi4 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+/* Returns: a * b */
+
+/* Effects: sets *overflow to 1 if a * b overflows */
+
+COMPILER_RT_ABI si_int
+__mulosi4(si_int a, si_int b, int* overflow)
+{
+ const int N = (int)(sizeof(si_int) * CHAR_BIT);
+ const si_int MIN = (si_int)1 << (N-1);
+ const si_int MAX = ~MIN;
+ *overflow = 0;
+ si_int result = a * b;
+ if (a == MIN)
+ {
+ if (b != 0 && b != 1)
+ *overflow = 1;
+ return result;
+ }
+ if (b == MIN)
+ {
+ if (a != 0 && a != 1)
+ *overflow = 1;
+ return result;
+ }
+ si_int sa = a >> (N - 1);
+ si_int abs_a = (a ^ sa) - sa;
+ si_int sb = b >> (N - 1);
+ si_int abs_b = (b ^ sb) - sb;
+ if (abs_a < 2 || abs_b < 2)
+ return result;
+ if (sa == sb)
+ {
+ if (abs_a > MAX / abs_b)
+ *overflow = 1;
+ }
+ else
+ {
+ if (abs_a > MIN / -abs_b)
+ *overflow = 1;
+ }
+ return result;
+}