GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcompiler_rt/mulsc3.c Lines: 0 35 0.0 %
Date: 2017-11-07 Branches: 0 40 0.0 %

Line Branch Exec Source
1
/* ===-- mulsc3.c - Implement __mulsc3 -------------------------------------===
2
 *
3
 *                     The LLVM Compiler Infrastructure
4
 *
5
 * This file is dual licensed under the MIT and the University of Illinois Open
6
 * Source Licenses. See LICENSE.TXT for details.
7
 *
8
 * ===----------------------------------------------------------------------===
9
 *
10
 * This file implements __mulsc3 for the compiler_rt library.
11
 *
12
 * ===----------------------------------------------------------------------===
13
 */
14
15
#include "int_lib.h"
16
#include "int_math.h"
17
18
/* Returns: the product of a + ib and c + id */
19
20
COMPILER_RT_ABI Fcomplex
21
__mulsc3(float __a, float __b, float __c, float __d)
22
{
23
    float __ac = __a * __c;
24
    float __bd = __b * __d;
25
    float __ad = __a * __d;
26
    float __bc = __b * __c;
27
    Fcomplex z;
28
    COMPLEX_REAL(z) = __ac - __bd;
29
    COMPLEX_IMAGINARY(z) = __ad + __bc;
30
    if (crt_isnan(COMPLEX_REAL(z)) && crt_isnan(COMPLEX_IMAGINARY(z)))
31
    {
32
        int __recalc = 0;
33
        if (crt_isinf(__a) || crt_isinf(__b))
34
        {
35
            __a = crt_copysignf(crt_isinf(__a) ? 1 : 0, __a);
36
            __b = crt_copysignf(crt_isinf(__b) ? 1 : 0, __b);
37
            if (crt_isnan(__c))
38
                __c = crt_copysignf(0, __c);
39
            if (crt_isnan(__d))
40
                __d = crt_copysignf(0, __d);
41
            __recalc = 1;
42
        }
43
        if (crt_isinf(__c) || crt_isinf(__d))
44
        {
45
            __c = crt_copysignf(crt_isinf(__c) ? 1 : 0, __c);
46
            __d = crt_copysignf(crt_isinf(__d) ? 1 : 0, __d);
47
            if (crt_isnan(__a))
48
                __a = crt_copysignf(0, __a);
49
            if (crt_isnan(__b))
50
                __b = crt_copysignf(0, __b);
51
            __recalc = 1;
52
        }
53
        if (!__recalc && (crt_isinf(__ac) || crt_isinf(__bd) ||
54
                          crt_isinf(__ad) || crt_isinf(__bc)))
55
        {
56
            if (crt_isnan(__a))
57
                __a = crt_copysignf(0, __a);
58
            if (crt_isnan(__b))
59
                __b = crt_copysignf(0, __b);
60
            if (crt_isnan(__c))
61
                __c = crt_copysignf(0, __c);
62
            if (crt_isnan(__d))
63
                __d = crt_copysignf(0, __d);
64
            __recalc = 1;
65
        }
66
        if (__recalc)
67
        {
68
            COMPLEX_REAL(z) = CRT_INFINITY * (__a * __c - __b * __d);
69
            COMPLEX_IMAGINARY(z) = CRT_INFINITY * (__a * __d + __b * __c);
70
        }
71
    }
72
    return z;
73
}