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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/fixxfdi.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/fixxfdi.c')
-rw-r--r-- | contrib/libs/cxxsupp/builtins/fixxfdi.c | 96 |
1 files changed, 48 insertions, 48 deletions
diff --git a/contrib/libs/cxxsupp/builtins/fixxfdi.c b/contrib/libs/cxxsupp/builtins/fixxfdi.c index 011787f9e4..65ba7ce89d 100644 --- a/contrib/libs/cxxsupp/builtins/fixxfdi.c +++ b/contrib/libs/cxxsupp/builtins/fixxfdi.c @@ -1,48 +1,48 @@ -/* ===-- fixxfdi.c - Implement __fixxfdi -----------------------------------=== - * - * 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 __fixxfdi for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ - -#if !_ARCH_PPC - -#include "int_lib.h" - -/* Returns: convert a to a signed long long, rounding toward zero. */ - -/* Assumption: long double is an intel 80 bit floating point type padded with 6 bytes - * di_int is a 64 bit integral type - * value in long double is representable in di_int (no range checking performed) - */ - -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | - * 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm - */ - -COMPILER_RT_ABI di_int -__fixxfdi(long double a) -{ - const di_int di_max = (di_int)((~(du_int)0) / 2); - const di_int di_min = -di_max - 1; - long_double_bits fb; - fb.f = a; - int e = (fb.u.high.s.low & 0x00007FFF) - 16383; - if (e < 0) - return 0; - if ((unsigned)e >= sizeof(di_int) * CHAR_BIT) - return a > 0 ? di_max : di_min; - di_int s = -(si_int)((fb.u.high.s.low & 0x00008000) >> 15); - di_int r = fb.u.low.all; - r = (du_int)r >> (63 - e); - return (r ^ s) - s; -} - -#endif /* !_ARCH_PPC */ +/* ===-- fixxfdi.c - Implement __fixxfdi -----------------------------------=== + * + * 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 __fixxfdi for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ + +#if !_ARCH_PPC + +#include "int_lib.h" + +/* Returns: convert a to a signed long long, rounding toward zero. */ + +/* Assumption: long double is an intel 80 bit floating point type padded with 6 bytes + * di_int is a 64 bit integral type + * value in long double is representable in di_int (no range checking performed) + */ + +/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | + * 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm + */ + +COMPILER_RT_ABI di_int +__fixxfdi(long double a) +{ + const di_int di_max = (di_int)((~(du_int)0) / 2); + const di_int di_min = -di_max - 1; + long_double_bits fb; + fb.f = a; + int e = (fb.u.high.s.low & 0x00007FFF) - 16383; + if (e < 0) + return 0; + if ((unsigned)e >= sizeof(di_int) * CHAR_BIT) + return a > 0 ? di_max : di_min; + di_int s = -(si_int)((fb.u.high.s.low & 0x00008000) >> 15); + di_int r = fb.u.low.all; + r = (du_int)r >> (63 - e); + return (r ^ s) - s; +} + +#endif /* !_ARCH_PPC */ |