blob: 7506faac07e02c01ade1f553a806a75ee6d71b5e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/* $NetBSD: infinityl_ieee754.c,v 1.1 2011/01/17 23:53:03 matt Exp $ */
/*
* IEEE-compatible infinityl.c for 64-bit or 128-bit long double format.
* This is public domain.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: infinityl_ieee754.c,v 1.1 2011/01/17 23:53:03 matt Exp $");
#endif /* LIBC_SCCS and not lint */
#include <math.h>
#include <machine/endian.h>
#include <machine/ieee.h>
#ifdef __HAVE_LONG_DOUBLE
#define LDBL_EXPBITS EXT_EXPBITS
#define LDBL_EXP_INFNAN EXT_EXP_INFNAN
#else
#define LDBL_EXPBITS DBL_EXPBITS
#define LDBL_EXP_INFNAN DBL_EXP_INFNAN
#endif
#define EXP_INFNAN (LDBL_EXP_INFNAN << (31 - LDBL_EXPBITS))
const union __long_double_u __infinityl = { {
#if BYTE_ORDER == BIG_ENDIAN
[0] = (EXP_INFNAN >> 24) & 0x7f,
[1] = (EXP_INFNAN >> 16) & 0xff,
[2] = (EXP_INFNAN >> 8) & 0xff,
[3] = (EXP_INFNAN >> 0) & 0xff,
#else
[sizeof(long double)-4] = (EXP_INFNAN >> 0) & 0xff,
[sizeof(long double)-3] = (EXP_INFNAN >> 8) & 0xff,
[sizeof(long double)-2] = (EXP_INFNAN >> 16) & 0xff,
[sizeof(long double)-1] = (EXP_INFNAN >> 24) & 0x7f,
#endif
} };
|
