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/*

 * Copyright (C) 2005 Josef Cejka

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef __SFTYPES_H__

#define __SFTYPES_H__

#include <endian.h>

#include <stdint.h>

typedef union {

    float f;

    uint32_t binary;

    struct  {

        #if __BYTE_ORDER == __BIG_ENDIAN

        uint32_t sign:1;

        uint32_t exp:8;

        uint32_t fraction:23;

        #elif __BYTE_ORDER == __LITTLE_ENDIAN

        uint32_t fraction:23;

        uint32_t exp:8;

        uint32_t sign:1;

        #else 

            #error "Unknown endians."

        #endif

        } parts __attribute__ ((packed));

    } float32;

typedef union {

    double d;

    uint64_t binary;

    struct  {

        #if __BYTE_ORDER == __BIG_ENDIAN

        uint64_t sign:1;

        uint64_t exp:11;

        uint64_t fraction:52;

        #elif __BYTE_ORDER == __LITTLE_ENDIAN

        uint64_t fraction:52;

        uint64_t exp:11;

        uint64_t sign:1;

        #else 

            #error "Unknown endians."

        #endif

        } parts __attribute__ ((packed));

    } float64;

#define FLOAT32_MAX 0x7f800000

#define FLOAT32_MIN 0xff800000

#define FLOAT64_MAX

#define FLOAT64_MIN

/* For recognizing NaNs or infinity use isFloat32NaN and is Float32Inf, comparing with this constants is not sufficient */

#define FLOAT32_NAN 0x7FC00001

#define FLOAT32_SIGNAN 0x7F800001

#define FLOAT32_INF 0x7F800000

#define FLOAT64_NAN 0x7FF8000000000001ll

#define FLOAT64_SIGNAN 0x7FF0000000000001ll

#define FLOAT64_INF 0x7FF0000000000000ll

#define FLOAT32_FRACTION_SIZE 23

#define FLOAT64_FRACTION_SIZE 52

#define FLOAT32_HIDDEN_BIT_MASK 0x800000

#define FLOAT64_HIDDEN_BIT_MASK 0x10000000000000ll

#define FLOAT32_MAX_EXPONENT 0xFF

#define FLOAT64_MAX_EXPONENT 0x7FF

#define FLOAT32_BIAS 0x7F

#define FLOAT64_BIAS 0x3FF

#define FLOAT80_BIAS 0x3FFF

#endif