math: fix long double fpclassify tests for ldbl==dbl archs
[libc-test] / src / math / fpclassify.c
1 #include <stdio.h>
2 #include <math.h>
3
4 #define T(a,b) {__LINE__, a, b},
5 #define length(a) (sizeof(a)/sizeof*(a))
6
7 static struct {
8         int line;
9         float f;
10         int class;
11 } tf[] = {
12         T(0.0/0.0, FP_NAN)
13         T(-0.0/0.0, FP_NAN)
14         T(1/0.0, FP_INFINITE)
15         T(-1/0.0, FP_INFINITE)
16         T(0x1.ffffp127, FP_NORMAL)
17         T(-0x1.ffffp127, FP_NORMAL)
18         T(0x1p-127, FP_SUBNORMAL)
19         T(-0x1p-127, FP_SUBNORMAL)
20         T(0.0, FP_ZERO)
21         T(-0.0, FP_ZERO)
22         T(3.14, FP_NORMAL)
23         T(-42, FP_NORMAL)
24 };
25
26 static struct {
27         int line;
28         double f;
29         int class;
30 } td[] = {
31         T(0.0/0.0, FP_NAN)
32         T(-0.0/0.0, FP_NAN)
33         T(1/0.0, FP_INFINITE)
34         T(-1/0.0, FP_INFINITE)
35         T(0x1.ffffp1023, FP_NORMAL)
36         T(-0x1.ffffp1023, FP_NORMAL)
37         T(0x1p-1023, FP_SUBNORMAL)
38         T(-0x1p-1023, FP_SUBNORMAL)
39         T(0.0, FP_ZERO)
40         T(-0.0, FP_ZERO)
41         T(3.14, FP_NORMAL)
42         T(-42, FP_NORMAL)
43 };
44
45 static struct {
46         int line;
47         long double f;
48         int class;
49 } tl[] = {
50         T(0.0/0.0, FP_NAN)
51         T(-0.0/0.0, FP_NAN)
52         T(1/0.0, FP_INFINITE)
53         T(-1/0.0, FP_INFINITE)
54 #if LDBL_MAX_EXP==16384
55         T(0x1.ffffp16383L, FP_NORMAL)
56         T(-0x1.ffffp16383L, FP_NORMAL)
57         T(0x1p-16383L, FP_SUBNORMAL)
58         T(-0x1p-16383L, FP_SUBNORMAL)
59 #elif LDBL_MAX_EXP==1024
60         T(0x1.ffffp1023L, FP_NORMAL)
61         T(-0x1.ffffp1023L, FP_NORMAL)
62         T(0x1p-1023L, FP_SUBNORMAL)
63         T(-0x1p-1023L, FP_SUBNORMAL)
64 #endif
65         T(0.0, FP_ZERO)
66         T(-0.0, FP_ZERO)
67         T(3.14, FP_NORMAL)
68         T(-42, FP_NORMAL)
69 };
70
71 static char *strclass(int c)
72 {
73 #define C(n) case n: return #n;
74         switch (c) {
75         C(FP_NAN)
76         C(FP_INFINITE)
77         C(FP_ZERO)
78         C(FP_SUBNORMAL)
79         C(FP_NORMAL)
80         }
81         return "invalid";
82 }
83
84 #define error(t,c) err++, printf("%s:%d: (at line %d) %La has class %d (%s), but %s returns %d\n", \
85         __FILE__, __LINE__, t.line, (long double)t.f, t.class, strclass(t.class), #c, c(t.f))
86
87 int main()
88 {
89         int i;
90         int err = 0;
91
92         for (i = 0; i < length(tf); i++) {
93                 if (fpclassify(tf[i].f) != tf[i].class)
94                         error(tf[i], fpclassify);
95                 if (!!isinf(tf[i].f) != (tf[i].class == FP_INFINITE))
96                         error(tf[i], isinf);
97                 if (!!isnan(tf[i].f) != (tf[i].class == FP_NAN))
98                         error(tf[i], isnan);
99                 if (!!isnormal(tf[i].f) != (tf[i].class == FP_NORMAL))
100                         error(tf[i], isnormal);
101                 if (!!isfinite(tf[i].f) != (tf[i].class > FP_INFINITE))
102                         error(tf[i], isfinite);
103         }
104
105         for (i = 0; i < length(td); i++) {
106                 if (fpclassify(td[i].f) != td[i].class)
107                         error(td[i], fpclassify);
108                 if (!!isinf(td[i].f) != (td[i].class == FP_INFINITE))
109                         error(td[i], isinf);
110                 if (!!isnan(td[i].f) != (td[i].class == FP_NAN))
111                         error(td[i], isnan);
112                 if (!!isnormal(td[i].f) != (td[i].class == FP_NORMAL))
113                         error(td[i], isnormal);
114                 if (!!isfinite(td[i].f) != (td[i].class > FP_INFINITE))
115                         error(td[i], isfinite);
116         }
117
118         for (i = 0; i < length(tl); i++) {
119                 if (fpclassify(tl[i].f) != tl[i].class)
120                         error(tl[i], fpclassify);
121                 if (!!isinf(tl[i].f) != (tl[i].class == FP_INFINITE))
122                         error(tl[i], isinf);
123                 if (!!isnan(tl[i].f) != (tl[i].class == FP_NAN))
124                         error(tl[i], isnan);
125                 if (!!isnormal(tl[i].f) != (tl[i].class == FP_NORMAL))
126                         error(tl[i], isnormal);
127                 if (!!isfinite(tl[i].f) != (tl[i].class > FP_INFINITE))
128                         error(tl[i], isfinite);
129         }
130
131         return !!err;
132 }