/usr/include/pike8.0/pike/pike_float.h is in pike8.0-dev 8.0.388-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | /* Misc stuff for dealing with floats.
*/
#ifndef PIKE_FLOAT_H
#define PIKE_FLOAT_H
#include "global.h"
#ifdef HAVE_FLOATINGPOINT_H
#include <floatingpoint.h>
#endif
#ifdef HAVE_IEEEFP_H
#include <ieeefp.h>
#endif
#ifdef HAVE_FP_CLASS_H
#include <fp_class.h>
#endif
/* isnan()...
*/
#ifdef HAVE_ISNAN
#if defined(HAVE__ISNAN) && defined(__NT__)
/* On NT only _isnan() has a prototype.
* isnan() is the standardized name, so use that
* on all other platforms.
*/
#define PIKE_ISNAN(X) _isnan(X)
#else /* !(HAVE__ISNAN && __NT__) */
#define PIKE_ISNAN(X) isnan(X)
#endif /* HAVE__ISNAN && __NT__ */
#else /* !HAVE_ISNAN */
#ifdef HAVE__ISNAN
#define PIKE_ISNAN(X) _isnan(X)
#else /* !HAVE__ISNAN */
/* Fallback function */
static INLINE int ATTRIBUTE((unused)) pike_isnan(double x)
{
return ((x == 0.0) == (x < 0.0)) &&
((x == 0.0) == (x > 0.0));
}
#define PIKE_ISNAN(X) pike_isnan(X)
#endif /* HAVE__ISNAN */
#endif /* HAVE_ISNAN */
/* isinf()...
*/
#ifdef HAVE_ISINF
#define PIKE_ISINF(X) isinf(X)
#else /* HAVE_ISINF */
#define PIKE_ISINF(X) ((X) && ((X)+(X) == (X)))
#endif /* HAVE_ISINF */
#ifdef HAVE_ISUNORDERED
#define PIKE_ISUNORDERED(X,Y) isunordered(X,Y)
#else
#define PIKE_ISUNORDERED(X,Y) (PIKE_ISNAN(X)||PIKE_ISNAN(Y))
#endif /* HAVE_ISUNORDERED */
#ifndef FLOAT_IS_IEEE_BIG
#ifndef FLOAT_IS_IEEE_LITTLE
#define NEED_CUSTOM_IEEE
#endif
#endif
#ifndef NEED_CUSTOM_IEEE
#ifndef DOUBLE_IS_IEEE_BIG
#ifndef DOUBLE_IS_IEEE_LITTLE
#define NEED_CUSTOM_IEEE
#endif
#endif
#endif
/* This calculation should always give some margin based on the size. */
/* It utilizes that log10(256) ~= 2.4 < 5/2. */
/* One quarter of the float is the exponent. */
#define MAX_FLOAT_EXP_LEN ((SIZEOF_FLOAT_TYPE * 5 + 4) / 8)
/* Ten extra bytes: Mantissa sign, decimal point (up to four bytes),
* zero before the decimal point, the 'e', the exponent sign, an extra
* digit due to the mantissa/exponent split, and the \0 termination.
*
* Four bytes for the decimal point is built on the assumption that it
* can be any unicode char, which in utf8 encoding can take up to four
* bytes. See format_pike_float. */
#define MAX_FLOAT_SPRINTF_LEN (10 + PIKEFLOAT_DIG + MAX_FLOAT_EXP_LEN)
PMOD_EXPORT void format_pike_float (char *buf, FLOAT_TYPE f);
#endif /* !PIKE_FLOAT_H */
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