File: nan.h

package info (click to toggle)
plplot 5.6.1-10
  • links: PTS
  • area: main
  • in suites: etch, etch-m68k
  • size: 30,084 kB
  • ctags: 14,146
  • sloc: ansic: 108,972; xml: 19,583; sh: 10,727; cpp: 9,049; tcl: 8,593; perl: 4,682; python: 4,332; f90: 3,697; java: 3,492; makefile: 3,400; fortran: 290; sed: 5; awk: 1
file content (34 lines) | stat: -rw-r--r-- 803 bytes parent folder | download | duplicates (3) 
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
 
/******************************************************************************
 *
 * File:           nan.h
 *
 * Created:        18/10/2001
 *
 * Author:         Pavel Sakov
 *                 CSIRO Marine Research
 *
 * Purpose:        NaN definition
 *
 * Description:    Should cover machines with 64 bit doubles or other machines
 *                 with GCC
 *
 * Revisions:      None
 *
 *****************************************************************************/

#if !defined(_NAN_H)
#define _NAN_H

#if defined(__GNUC__)
static const double NaN = 0.0 / 0.0;
#elif defined(BIG_ENDIAN) || defined(_BIG_ENDIAN)
static const long long lNaN = 0x7fffffffffffffff;

#define NaN (*(double*)&lNaN)
#else
static const long long lNaN = 0xfff8000000000000;

#define NaN (*(double*)&lNaN)
#endif

#endif