Shimeng (Simon) Wang | a66dd5f | 2010-04-19 18:06:41 -0700 | [diff] [blame] | 1 | /************************************************************************* |
| 2 | * |
Selim Gurun | df143a5 | 2012-03-05 14:35:53 -0800 | [diff] [blame] | 3 | * $Id$ |
Shimeng (Simon) Wang | a66dd5f | 2010-04-19 18:06:41 -0700 | [diff] [blame] | 4 | * |
| 5 | * Copyright (C) 2001 Bjorn Reese <breese@users.sourceforge.net> |
| 6 | * |
| 7 | * Permission to use, copy, modify, and distribute this software for any |
| 8 | * purpose with or without fee is hereby granted, provided that the above |
| 9 | * copyright notice and this permission notice appear in all copies. |
| 10 | * |
| 11 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| 12 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| 13 | * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND |
| 14 | * CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER. |
| 15 | * |
| 16 | ************************************************************************/ |
| 17 | |
| 18 | #ifndef TRIO_NAN_H |
| 19 | #define TRIO_NAN_H |
| 20 | |
| 21 | #include "triodef.h" |
| 22 | |
| 23 | #ifdef __cplusplus |
| 24 | extern "C" { |
| 25 | #endif |
| 26 | |
| 27 | enum { |
| 28 | TRIO_FP_INFINITE, |
| 29 | TRIO_FP_NAN, |
| 30 | TRIO_FP_NORMAL, |
| 31 | TRIO_FP_SUBNORMAL, |
| 32 | TRIO_FP_ZERO |
| 33 | }; |
| 34 | |
| 35 | /* |
| 36 | * Return NaN (Not-a-Number). |
| 37 | */ |
| 38 | TRIO_PUBLIC double trio_nan TRIO_PROTO((void)); |
| 39 | |
| 40 | /* |
| 41 | * Return positive infinity. |
| 42 | */ |
| 43 | TRIO_PUBLIC double trio_pinf TRIO_PROTO((void)); |
| 44 | |
| 45 | /* |
| 46 | * Return negative infinity. |
| 47 | */ |
| 48 | TRIO_PUBLIC double trio_ninf TRIO_PROTO((void)); |
Selim Gurun | 94442ad | 2013-12-30 18:23:42 -0800 | [diff] [blame] | 49 | |
Shimeng (Simon) Wang | a66dd5f | 2010-04-19 18:06:41 -0700 | [diff] [blame] | 50 | /* |
| 51 | * Return negative zero. |
| 52 | */ |
| 53 | TRIO_PUBLIC double trio_nzero TRIO_PROTO((TRIO_NOARGS)); |
| 54 | |
| 55 | /* |
| 56 | * If number is a NaN return non-zero, otherwise return zero. |
| 57 | */ |
| 58 | TRIO_PUBLIC int trio_isnan TRIO_PROTO((double number)); |
| 59 | |
| 60 | /* |
| 61 | * If number is positive infinity return 1, if number is negative |
| 62 | * infinity return -1, otherwise return 0. |
| 63 | */ |
| 64 | TRIO_PUBLIC int trio_isinf TRIO_PROTO((double number)); |
| 65 | |
| 66 | /* |
| 67 | * If number is finite return non-zero, otherwise return zero. |
| 68 | */ |
| 69 | #if 0 |
| 70 | /* Temporary fix - these 2 routines not used in libxml */ |
| 71 | TRIO_PUBLIC int trio_isfinite TRIO_PROTO((double number)); |
| 72 | |
| 73 | TRIO_PUBLIC int trio_fpclassify TRIO_PROTO((double number)); |
| 74 | #endif |
| 75 | |
| 76 | TRIO_PUBLIC int trio_signbit TRIO_PROTO((double number)); |
| 77 | |
| 78 | TRIO_PUBLIC int trio_fpclassify_and_signbit TRIO_PROTO((double number, int *is_negative)); |
| 79 | |
| 80 | #ifdef __cplusplus |
| 81 | } |
| 82 | #endif |
| 83 | |
| 84 | #endif /* TRIO_NAN_H */ |