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author | Anton Samokhvalov <pg83@yandex.ru> | 2022-02-10 16:45:15 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:45:15 +0300 |
commit | 72cb13b4aff9bc9cf22e49251bc8fd143f82538f (patch) | |
tree | da2c34829458c7d4e74bdfbdf85dff449e9e7fb8 /contrib/libs/cxxsupp/builtins/divti3.c | |
parent | 778e51ba091dc39e7b7fcab2b9cf4dbedfb6f2b5 (diff) | |
download | ydb-72cb13b4aff9bc9cf22e49251bc8fd143f82538f.tar.gz |
Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/divti3.c')
-rw-r--r-- | contrib/libs/cxxsupp/builtins/divti3.c | 66 |
1 files changed, 33 insertions, 33 deletions
diff --git a/contrib/libs/cxxsupp/builtins/divti3.c b/contrib/libs/cxxsupp/builtins/divti3.c index c73eae28fe..1bcf0d53a2 100644 --- a/contrib/libs/cxxsupp/builtins/divti3.c +++ b/contrib/libs/cxxsupp/builtins/divti3.c @@ -1,33 +1,33 @@ -/* ===-- divti3.c - Implement __divti3 -------------------------------------=== - * - * 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 __divti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ - -#include "int_lib.h" - -#ifdef CRT_HAS_128BIT - -/* Returns: a / b */ - -COMPILER_RT_ABI ti_int -__divti3(ti_int a, ti_int b) -{ - const int bits_in_tword_m1 = (int)(sizeof(ti_int) * CHAR_BIT) - 1; - ti_int s_a = a >> bits_in_tword_m1; /* s_a = a < 0 ? -1 : 0 */ - ti_int s_b = b >> bits_in_tword_m1; /* s_b = b < 0 ? -1 : 0 */ - a = (a ^ s_a) - s_a; /* negate if s_a == -1 */ - b = (b ^ s_b) - s_b; /* negate if s_b == -1 */ - s_a ^= s_b; /* sign of quotient */ - return (__udivmodti4(a, b, (tu_int*)0) ^ s_a) - s_a; /* negate if s_a == -1 */ -} - -#endif /* CRT_HAS_128BIT */ +/* ===-- divti3.c - Implement __divti3 -------------------------------------=== + * + * 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 __divti3 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ + +#include "int_lib.h" + +#ifdef CRT_HAS_128BIT + +/* Returns: a / b */ + +COMPILER_RT_ABI ti_int +__divti3(ti_int a, ti_int b) +{ + const int bits_in_tword_m1 = (int)(sizeof(ti_int) * CHAR_BIT) - 1; + ti_int s_a = a >> bits_in_tword_m1; /* s_a = a < 0 ? -1 : 0 */ + ti_int s_b = b >> bits_in_tword_m1; /* s_b = b < 0 ? -1 : 0 */ + a = (a ^ s_a) - s_a; /* negate if s_a == -1 */ + b = (b ^ s_b) - s_b; /* negate if s_b == -1 */ + s_a ^= s_b; /* sign of quotient */ + return (__udivmodti4(a, b, (tu_int*)0) ^ s_a) - s_a; /* negate if s_a == -1 */ +} + +#endif /* CRT_HAS_128BIT */ |