diff options
Diffstat (limited to 'lib/builtins/muldc3.c')
| -rw-r--r-- | lib/builtins/muldc3.c | 124 |
1 files changed, 58 insertions, 66 deletions
diff --git a/lib/builtins/muldc3.c b/lib/builtins/muldc3.c index 16d8e9839..0ea7041c3 100644 --- a/lib/builtins/muldc3.c +++ b/lib/builtins/muldc3.c @@ -1,73 +1,65 @@ -/* ===-- muldc3.c - Implement __muldc3 -------------------------------------=== - * - * 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 __muldc3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- muldc3.c - Implement __muldc3 -------------------------------------===// +// +// 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 __muldc3 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 Dcomplex -__muldc3(double __a, double __b, double __c, double __d) -{ - double __ac = __a * __c; - double __bd = __b * __d; - double __ad = __a * __d; - double __bc = __b * __c; - Dcomplex z; - COMPLEX_REAL(z) = __ac - __bd; - COMPLEX_IMAGINARY(z) = __ad + __bc; - if (crt_isnan(COMPLEX_REAL(z)) && crt_isnan(COMPLEX_IMAGINARY(z))) - { - int __recalc = 0; - if (crt_isinf(__a) || crt_isinf(__b)) - { - __a = crt_copysign(crt_isinf(__a) ? 1 : 0, __a); - __b = crt_copysign(crt_isinf(__b) ? 1 : 0, __b); - if (crt_isnan(__c)) - __c = crt_copysign(0, __c); - if (crt_isnan(__d)) - __d = crt_copysign(0, __d); - __recalc = 1; - } - if (crt_isinf(__c) || crt_isinf(__d)) - { - __c = crt_copysign(crt_isinf(__c) ? 1 : 0, __c); - __d = crt_copysign(crt_isinf(__d) ? 1 : 0, __d); - if (crt_isnan(__a)) - __a = crt_copysign(0, __a); - if (crt_isnan(__b)) - __b = crt_copysign(0, __b); - __recalc = 1; - } - if (!__recalc && (crt_isinf(__ac) || crt_isinf(__bd) || - crt_isinf(__ad) || crt_isinf(__bc))) - { - if (crt_isnan(__a)) - __a = crt_copysign(0, __a); - if (crt_isnan(__b)) - __b = crt_copysign(0, __b); - if (crt_isnan(__c)) - __c = crt_copysign(0, __c); - if (crt_isnan(__d)) - __d = crt_copysign(0, __d); - __recalc = 1; - } - if (__recalc) - { - COMPLEX_REAL(z) = CRT_INFINITY * (__a * __c - __b * __d); - COMPLEX_IMAGINARY(z) = CRT_INFINITY * (__a * __d + __b * __c); - } +COMPILER_RT_ABI Dcomplex __muldc3(double __a, double __b, double __c, + double __d) { + double __ac = __a * __c; + double __bd = __b * __d; + double __ad = __a * __d; + double __bc = __b * __c; + Dcomplex z; + COMPLEX_REAL(z) = __ac - __bd; + COMPLEX_IMAGINARY(z) = __ad + __bc; + if (crt_isnan(COMPLEX_REAL(z)) && crt_isnan(COMPLEX_IMAGINARY(z))) { + int __recalc = 0; + if (crt_isinf(__a) || crt_isinf(__b)) { + __a = crt_copysign(crt_isinf(__a) ? 1 : 0, __a); + __b = crt_copysign(crt_isinf(__b) ? 1 : 0, __b); + if (crt_isnan(__c)) + __c = crt_copysign(0, __c); + if (crt_isnan(__d)) + __d = crt_copysign(0, __d); + __recalc = 1; } - return z; + if (crt_isinf(__c) || crt_isinf(__d)) { + __c = crt_copysign(crt_isinf(__c) ? 1 : 0, __c); + __d = crt_copysign(crt_isinf(__d) ? 1 : 0, __d); + if (crt_isnan(__a)) + __a = crt_copysign(0, __a); + if (crt_isnan(__b)) + __b = crt_copysign(0, __b); + __recalc = 1; + } + if (!__recalc && (crt_isinf(__ac) || crt_isinf(__bd) || crt_isinf(__ad) || + crt_isinf(__bc))) { + if (crt_isnan(__a)) + __a = crt_copysign(0, __a); + if (crt_isnan(__b)) + __b = crt_copysign(0, __b); + if (crt_isnan(__c)) + __c = crt_copysign(0, __c); + if (crt_isnan(__d)) + __d = crt_copysign(0, __d); + __recalc = 1; + } + if (__recalc) { + COMPLEX_REAL(z) = CRT_INFINITY * (__a * __c - __b * __d); + COMPLEX_IMAGINARY(z) = CRT_INFINITY * (__a * __d + __b * __c); + } + } + return z; } |