1 /*************************************************************************

     2  *

     3  * Copyright (C) 2001 Bjorn Reese <breese@users.sourceforge.net>

     4  *

     5  * Permission to use, copy, modify, and distribute this software for any

     6  * purpose with or without fee is hereby granted, provided that the above

     7  * copyright notice and this permission notice appear in all copies.

     8  *

     9  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED

    10  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF

    11  * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND

    12  * CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.

    13  *

    14  * Portion Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

    15  ************************************************************************/

    16 

    17 /** @file

    18 @publishedPartner

    19 @released 

    20 */ 

    21 #ifndef TRIO_NAN_H

    22 #define TRIO_NAN_H

    23 

    24 #include <xmlengtriodef.h>

    25 

    26 #ifdef __cplusplus

    27 extern "C" {

    28 #endif

    29 

    30 enum {

    31   TRIO_FP_INFINITE,

    32   TRIO_FP_NAN,

    33   TRIO_FP_NORMAL,

    34   TRIO_FP_SUBNORMAL,

    35   TRIO_FP_ZERO

    36 };

    37 

    38 /*

    39  * Return NaN (Not-a-Number).

    40  */

    41 TRIO_PUBLIC double trio_nan TRIO_PROTO((void));

    42 

    43 /*

    44  * Return positive infinity.

    45  */

    46 TRIO_PUBLIC double trio_pinf TRIO_PROTO((void));

    47 

    48 /*

    49  * Return negative infinity.

    50  */

    51 TRIO_PUBLIC double trio_ninf TRIO_PROTO((void));

    52 

    53 /*

    54  * Return negative zero.

    55  */

    56 TRIO_PUBLIC double trio_nzero TRIO_PROTO((TRIO_NOARGS));

    57 

    58 /*

    59  * If number is a NaN return non-zero, otherwise return zero.

    60  */

    61 TRIO_PUBLIC int trio_isnan TRIO_PROTO((double number));

    62 

    63 /*

    64  * If number is positive infinity return 1, if number is negative

    65  * infinity return -1, otherwise return 0.

    66  */

    67 TRIO_PUBLIC int trio_isinf TRIO_PROTO((double number));

    68 

    69 /*

    70  * If number is finite return non-zero, otherwise return zero.

    71  */

    72 #if 0

    73     

    74 TRIO_PUBLIC int trio_isfinite TRIO_PROTO((double number));

    75 

    76 TRIO_PUBLIC int trio_fpclassify TRIO_PROTO((double number));

    77 #endif

    78 

    79 TRIO_PUBLIC int trio_signbit TRIO_PROTO((double number));

    80 

    81 TRIO_PUBLIC int trio_fpclassify_and_signbit TRIO_PROTO((double number, int *is_negative));

    82 

    83 #ifdef __cplusplus

    84 }

    85 #endif

    86 

    87 #endif /* TRIO_NAN_H */

    88