Python code coverage for Modules/_ctypes/libffi/testsuite/libffi.call/float1.c

#	count	content
1	n/a	/* Area: ffi_call
2	n/a	Purpose: Check return value double.
3	n/a	Limitations: none.
4	n/a	PR: none.
5	n/a	Originator: From the original ffitest.c */
6	n/a
7	n/a	/* { dg-do run } */
8	n/a	#include "ffitest.h"
9	n/a	#include "float.h"
10	n/a
11	n/a	typedef union
12	n/a	{
13	n/a	double d;
14	n/a	unsigned char c[sizeof (double)];
15	n/a	} value_type;
16	n/a
17	n/a	#define CANARY 0xba
18	n/a
19	n/a	static double dblit(float f)
20	n/a	{
21	n/a	return f/3.0;
22	n/a	}
23	n/a
24	n/a	int main (void)
25	n/a	{
26	n/a	ffi_cif cif;
27	n/a	ffi_type *args[MAX_ARGS];
28	n/a	void *values[MAX_ARGS];
29	n/a	float f;
30	n/a	value_type result[2];
31	n/a	unsigned int i;
32	n/a
33	n/a	args[0] = &ffi_type_float;
34	n/a	values[0] = &f;
35	n/a
36	n/a	/* Initialize the cif */
37	n/a	CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
38	n/a	&ffi_type_double, args) == FFI_OK);
39	n/a
40	n/a	f = 3.14159;
41	n/a
42	n/a	/* Put a canary in the return array. This is a regression test for
43	n/a	a buffer overrun. */
44	n/a	memset(result[1].c, CANARY, sizeof (double));
45	n/a
46	n/a	ffi_call(&cif, FFI_FN(dblit), &result[0].d, values);
47	n/a
48	n/a	/* These are not always the same!! Check for a reasonable delta */
49	n/a
50	n/a	CHECK(result[0].d - dblit(f) < DBL_EPSILON);
51	n/a
52	n/a	/* Check the canary. */
53	n/a	for (i = 0; i < sizeof (double); ++i)
54	n/a	CHECK(result[1].c[i] == CANARY);
55	n/a
56	n/a	exit(0);
57	n/a
58	n/a	}