mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
7e0a09feec
This change ports APE Loader to Linux AARCH64, so that Raspberry Pi users can run programs like redbean, without the executable needing to modify itself. Progress has also slipped into this change on the issue of making progress better conforming to user expectations and industry standards regarding which symbols we're allowed to declare
76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/* clang-format off */
|
|
/* ===-- 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.
|
|
*
|
|
* ===----------------------------------------------------------------------===
|
|
*/
|
|
|
|
__static_yoink("huge_compiler_rt_license");
|
|
|
|
#include "third_party/compiler_rt/int_lib.h"
|
|
#include "third_party/compiler_rt/int_math.h"
|
|
|
|
/* 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);
|
|
}
|
|
}
|
|
return z;
|
|
}
|