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