diff options
Diffstat (limited to 'lib/builtins/multc3.c')
| -rw-r--r-- | lib/builtins/multc3.c | 119 |
1 files changed, 58 insertions, 61 deletions
diff --git a/lib/builtins/multc3.c b/lib/builtins/multc3.c index 0518bc256..bb7f6aabf 100644 --- a/lib/builtins/multc3.c +++ b/lib/builtins/multc3.c @@ -1,68 +1,65 @@ -/* ===-- multc3.c - Implement __multc3 -------------------------------------=== - * - * 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 __multc3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- multc3.c - Implement __multc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __multc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #include "int_math.h" -/* Returns: the product of a + ib and c + id */ +// Returns: the product of a + ib and c + id -COMPILER_RT_ABI long double _Complex -__multc3(long double a, long double b, long double c, long double d) -{ - long double ac = a * c; - long double bd = b * d; - long double ad = a * d; - long double bc = b * c; - long double _Complex z; - __real__ z = ac - bd; - __imag__ z = ad + bc; - if (crt_isnan(__real__ z) && crt_isnan(__imag__ z)) { - int recalc = 0; - if (crt_isinf(a) || crt_isinf(b)) { - a = crt_copysignl(crt_isinf(a) ? 1 : 0, a); - b = crt_copysignl(crt_isinf(b) ? 1 : 0, b); - if (crt_isnan(c)) - c = crt_copysignl(0, c); - if (crt_isnan(d)) - d = crt_copysignl(0, d); - recalc = 1; - } - if (crt_isinf(c) || crt_isinf(d)) { - c = crt_copysignl(crt_isinf(c) ? 1 : 0, c); - d = crt_copysignl(crt_isinf(d) ? 1 : 0, d); - if (crt_isnan(a)) - a = crt_copysignl(0, a); - if (crt_isnan(b)) - b = crt_copysignl(0, b); - recalc = 1; - } - if (!recalc && (crt_isinf(ac) || crt_isinf(bd) || - crt_isinf(ad) || crt_isinf(bc))) { - if (crt_isnan(a)) - a = crt_copysignl(0, a); - if (crt_isnan(b)) - b = crt_copysignl(0, b); - if (crt_isnan(c)) - c = crt_copysignl(0, c); - if (crt_isnan(d)) - d = crt_copysignl(0, d); - recalc = 1; - } - if (recalc) { - __real__ z = CRT_INFINITY * (a * c - b * d); - __imag__ z = CRT_INFINITY * (a * d + b * c); - } +COMPILER_RT_ABI long double _Complex __multc3(long double a, long double b, + long double c, long double d) { + long double ac = a * c; + long double bd = b * d; + long double ad = a * d; + long double bc = b * c; + long double _Complex z; + __real__ z = ac - bd; + __imag__ z = ad + bc; + if (crt_isnan(__real__ z) && crt_isnan(__imag__ z)) { + int recalc = 0; + if (crt_isinf(a) || crt_isinf(b)) { + a = crt_copysignl(crt_isinf(a) ? 1 : 0, a); + b = crt_copysignl(crt_isinf(b) ? 1 : 0, b); + if (crt_isnan(c)) + c = crt_copysignl(0, c); + if (crt_isnan(d)) + d = crt_copysignl(0, d); + recalc = 1; } - return z; + if (crt_isinf(c) || crt_isinf(d)) { + c = crt_copysignl(crt_isinf(c) ? 1 : 0, c); + d = crt_copysignl(crt_isinf(d) ? 1 : 0, d); + if (crt_isnan(a)) + a = crt_copysignl(0, a); + if (crt_isnan(b)) + b = crt_copysignl(0, b); + recalc = 1; + } + if (!recalc && + (crt_isinf(ac) || crt_isinf(bd) || crt_isinf(ad) || crt_isinf(bc))) { + if (crt_isnan(a)) + a = crt_copysignl(0, a); + if (crt_isnan(b)) + b = crt_copysignl(0, b); + if (crt_isnan(c)) + c = crt_copysignl(0, c); + if (crt_isnan(d)) + d = crt_copysignl(0, d); + recalc = 1; + } + if (recalc) { + __real__ z = CRT_INFINITY * (a * c - b * d); + __imag__ z = CRT_INFINITY * (a * d + b * c); + } + } + return z; } |