1 /* Copyright (C) 2002 Free Software Foundation.
2
3 Test floating point negation produces the expected results.
4
5 Written by Roger Sayle, 21st May 2002. */
6
7 /* { dg-do run } */
8 /* { dg-options "-O2 -ffast-math" } */
9
10 extern void abort ();
11
12
13 double
dneg(double x)14 dneg (double x)
15 {
16 return -x;
17 }
18
19 double
dmult(double x)20 dmult (double x)
21 {
22 return -1.0 * x;
23 }
24
25 double
ddiv(double x)26 ddiv (double x)
27 {
28 return x / -1.0;
29 }
30
31
32 float
fneg(float x)33 fneg (float x)
34 {
35 return -x;
36 }
37
38 float
fmult(float x)39 fmult (float x)
40 {
41 return -1.0f * x;
42 }
43
44 float
fdiv(float x)45 fdiv (float x)
46 {
47 return x / -1.0f;
48 }
49
50
51 void
ftest(float src,float dst)52 ftest(float src, float dst)
53 {
54 if (fneg (src) != dst)
55 abort ();
56
57 if (src != fneg (dst))
58 abort ();
59
60 if (fmult (src) != dst)
61 abort ();
62
63 if (src != fmult (dst))
64 abort ();
65
66 if (fdiv (src) != dst)
67 abort ();
68
69 if (src != fdiv(dst))
70 abort ();
71 }
72
73 void
dtest(double src,double dst)74 dtest(double src, double dst)
75 {
76 if (dneg (src) != dst)
77 abort ();
78
79 if (src != dneg (dst))
80 abort ();
81
82 if (dmult (src) != dst)
83 abort ();
84
85 if (src != dmult (dst))
86 abort ();
87
88 if (ddiv (src) != dst)
89 abort ();
90
91 if (src != ddiv(dst))
92 abort ();
93 }
94
95
96 int
main()97 main ()
98 {
99 ftest (1.0f, -1.0f);
100 ftest (2.0f, -2.0f);
101 ftest (-3.0f, 3.0f);
102 ftest (0.0f, -0.0f);
103 ftest (-0.0f, 0.0f);
104
105 dtest (1.0, -1.0);
106 dtest (2.0, -2.0);
107 dtest (-3.0, 3.0);
108 dtest (0.0, -0.0);
109 dtest (-0.0, 0.0);
110
111 return 0;
112 }
113
114