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#ifndef CYGONCE_LIBM_SYS_IEEEFP_H
#define CYGONCE_LIBM_SYS_IEEEFP_H
//===========================================================================
//
//      ieeefp.h
//
//      Definitions specific to IEEE-754 floating-point format
//
//===========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
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// for more details.                                                        
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//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
// and link it with other works to produce a work based on this file,       
// this file does not by itself cause the resulting work to be covered by   
// the GNU General Public License. However the source code for this file    
// must still be made available in accordance with section (3) of the GNU   
// General Public License v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
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// ####ECOSGPLCOPYRIGHTEND####                                              
//===========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   jlarmour
// Contributors:  jlarmour
// Date:        1998-02-13
// Purpose:     
// Description: Definitions specific to IEEE-754 floating-point format
// Usage:       #include <sys/ieeefp.h>
//
//####DESCRIPTIONEND####
//
//===========================================================================
 
// CONFIGURATION
 
#include <pkgconf/libm.h>   // Configuration header
 
// Include the Math library?
#ifdef CYGPKG_LIBM     
 
// INCLUDES
 
#include <cyg/infra/cyg_type.h>     // Common type definitions and support
                                    // including endian-ness
 
#if (CYG_BYTEORDER == CYG_MSBFIRST) // Big endian
 
// Note: there do not seem to be any current machines which are Big Endian but
// have a mixed up double layout. 
 
typedef union 
{
    cyg_int32 asi32[2];
 
    cyg_int64 asi64;
 
    double value;
 
    struct 
    {
        unsigned int sign : 1;
        unsigned int exponent: 11;
        unsigned int fraction0:4;
        unsigned int fraction1:16;
        unsigned int fraction2:16;
        unsigned int fraction3:16;
 
    } number;
 
    struct 
    {
        unsigned int sign : 1;
        unsigned int exponent: 11;
        unsigned int quiet:1;
        unsigned int function0:3;
        unsigned int function1:16;
        unsigned int function2:16;
        unsigned int function3:16;
    } nan;
 
    struct 
    {
        cyg_uint32 msw;
        cyg_uint32 lsw;
    } parts;
 
 
} Cyg_libm_ieee_double_shape_type;
 
 
typedef union
{
    cyg_int32 asi32;
 
    float value;
 
    struct 
    {
        unsigned int sign : 1;
        unsigned int exponent: 8;
        unsigned int fraction0: 7;
        unsigned int fraction1: 16;
    } number;
 
    struct 
    {
        unsigned int sign:1;
        unsigned int exponent:8;
        unsigned int quiet:1;
        unsigned int function0:6;
        unsigned int function1:16;
    } nan;
 
} Cyg_libm_ieee_float_shape_type;
 
 
#else // Little endian
 
typedef union 
{
    cyg_int32 asi32[2];
 
    cyg_int64 asi64;
 
    double value;
 
    struct 
    {
#if (CYG_DOUBLE_BYTEORDER == CYG_MSBFIRST) // Big endian
        unsigned int fraction1:16;
        unsigned int fraction0: 4;
        unsigned int exponent :11;
        unsigned int sign     : 1;
        unsigned int fraction3:16;
        unsigned int fraction2:16;
#else
        unsigned int fraction3:16;
        unsigned int fraction2:16;
        unsigned int fraction1:16;
        unsigned int fraction0: 4;
        unsigned int exponent :11;
        unsigned int sign     : 1;
#endif
    } number;
 
    struct 
    {
#if (CYG_DOUBLE_BYTEORDER == CYG_MSBFIRST) // Big endian
        unsigned int function1:16;
        unsigned int function0:3;
        unsigned int quiet:1;
        unsigned int exponent: 11;
        unsigned int sign : 1;
        unsigned int function3:16;
        unsigned int function2:16;
#else
        unsigned int function3:16;
        unsigned int function2:16;
        unsigned int function1:16;
        unsigned int function0:3;
        unsigned int quiet:1;
        unsigned int exponent: 11;
        unsigned int sign : 1;
#endif
    } nan;
 
    struct 
    {
#if (CYG_DOUBLE_BYTEORDER == CYG_MSBFIRST) // Big endian
        cyg_uint32 msw;
        cyg_uint32 lsw;
#else
        cyg_uint32 lsw;
        cyg_uint32 msw;
#endif
    } parts;
 
} Cyg_libm_ieee_double_shape_type;
 
 
typedef union
{
    cyg_int32 asi32;
 
    float value;
 
    struct 
    {
        unsigned int fraction0: 7;
        unsigned int fraction1: 16;
        unsigned int exponent: 8;
        unsigned int sign : 1;
    } number;
 
    struct 
    {
        unsigned int function1:16;
        unsigned int function0:6;
        unsigned int quiet:1;
        unsigned int exponent:8;
        unsigned int sign:1;
    } nan;
 
} Cyg_libm_ieee_float_shape_type;
 
#endif // little-endian
 
 
#endif // ifdef CYGPKG_LIBM     
 
#endif // CYGONCE_LIBM_SYS_IEEEFP_H multiple inclusion protection
 
// EOF ieeefp.h