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84 lines
2.0 KiB
84 lines
2.0 KiB
/************************************************************************* |
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* |
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* $Id$ |
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* |
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* Copyright (C) 2001 Bjorn Reese <breese@users.sourceforge.net> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
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* MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND |
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* CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER. |
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* |
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************************************************************************/ |
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#ifndef TRIO_NAN_H |
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#define TRIO_NAN_H |
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#include "triodef.h" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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enum { |
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TRIO_FP_INFINITE, |
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TRIO_FP_NAN, |
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TRIO_FP_NORMAL, |
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TRIO_FP_SUBNORMAL, |
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TRIO_FP_ZERO |
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}; |
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/* |
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* Return NaN (Not-a-Number). |
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*/ |
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TRIO_PUBLIC double trio_nan TRIO_PROTO((void)); |
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/* |
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* Return positive infinity. |
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*/ |
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TRIO_PUBLIC double trio_pinf TRIO_PROTO((void)); |
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/* |
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* Return negative infinity. |
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*/ |
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TRIO_PUBLIC double trio_ninf TRIO_PROTO((void)); |
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/* |
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* Return negative zero. |
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*/ |
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TRIO_PUBLIC double trio_nzero TRIO_PROTO((TRIO_NOARGS)); |
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/* |
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* If number is a NaN return non-zero, otherwise return zero. |
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*/ |
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TRIO_PUBLIC int trio_isnan TRIO_PROTO((double number)); |
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/* |
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* If number is positive infinity return 1, if number is negative |
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* infinity return -1, otherwise return 0. |
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*/ |
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TRIO_PUBLIC int trio_isinf TRIO_PROTO((double number)); |
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/* |
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* If number is finite return non-zero, otherwise return zero. |
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*/ |
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#if 0 |
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/* Temporary fix - these 2 routines not used in libxml */ |
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TRIO_PUBLIC int trio_isfinite TRIO_PROTO((double number)); |
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TRIO_PUBLIC int trio_fpclassify TRIO_PROTO((double number)); |
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#endif |
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TRIO_PUBLIC int trio_signbit TRIO_PROTO((double number)); |
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TRIO_PUBLIC int trio_fpclassify_and_signbit TRIO_PROTO((double number, int *is_negative)); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* TRIO_NAN_H */
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