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

2 * This Original Work is copyright of 51 Degrees Mobile Experts Limited.

4 * Forbury Square, Reading, Berkshire, United Kingdom RG1 3EU.

5 *

6 * This Original Work is licensed under the European Union Public Licence

7 * (EUPL) v.1.2 and is subject to its terms as set out below.

8 *

9 * If a copy of the EUPL was not distributed with this file, You can obtain

10 * one at https://opensource.org/licenses/EUPL-1.2.

11 *

12 * The 'Compatible Licences' set out in the Appendix to the EUPL (as may be

13 * amended by the European Commission) shall be deemed incompatible for

14 * the purposes of the Work and the provisions of the compatibility

15 * clause in Article 5 of the EUPL shall not apply.

16 *

17 * If using the Work as, or as part of, a network application, by

18 * including the attribution notice(s) required under Article 5 of the EUPL

19 * in the end user terms of the application under an appropriate heading,

20 * such notice(s) shall fulfill the requirements of that article.

21 * ********************************************************************* */

22

23#ifndef FIFTYONE_DEGREES_FLOAT_H_INCLUDED

24#define FIFTYONE_DEGREES_FLOAT_H_INCLUDED

25

26#ifdef FIFTYONE_DEGREES_IPI_SYMBOLS

27#include "ipiSymbols.h"

28#endif

29

58

59#include <stdint.h>

60#include "data.h"

61#include "common.h"

62

66#define FIFTYONE_DEGREES_FLOAT_BIAS 127

70#define FIFTYONE_DEGREES_FLOAT_SIZE 4

74#define FIFTYONE_DEGREES_FLOAT_RADIX 2

78#define FIFTYONE_DEGREES_FLOAT_SIGN_SIZE 1

82#define FIFTYONE_DEGREES_FLOAT_EXP_SIZE 8

86#define FIFTYONE_DEGREES_FLOAT_MANT_SIZE 23

90#define FIFTYONE_DEGREES_FLOAT_MAX 3.402823466E38f

94#define FIFTYONE_DEGREES_FLOAT_MIN 1.175494351E-38f

98#define FIFTYONE_DEGREES_FLOAT_MIN_NEG -3.402823466E38f

103#define FIFTYONE_DEGREES_FLOAT_EXP_MAX 255

108#define FIFTYONE_DEGREES_FLOAT_MANT_MAX 8388607

109

115typedef struct fiftyone_degrees_float_type {

116 byte value[FIFTYONE_DEGREES_FLOAT_SIZE];

117} fiftyoneDegreesFloatInternal;

118

123typedef union {

124 fiftyoneDegreesFloatInternal fValue;

125 struct {

126 uint32_t mantissa : FIFTYONE_DEGREES_FLOAT_MANT_SIZE;

127 uint32_t exponent : FIFTYONE_DEGREES_FLOAT_EXP_SIZE;

128 uint32_t sign : FIFTYONE_DEGREES_FLOAT_SIGN_SIZE;

129 } parts;

130} fiftyoneDegreesFloatU;

131

138EXTERNAL float fiftyoneDegreesFloatToNative(fiftyoneDegreesFloatInternal f);

145EXTERNAL fiftyoneDegreesFloatInternal fiftyoneDegreesNativeToFloat(float f);

152EXTERNAL int fiftyoneDegreesFloatIsEqual(fiftyoneDegreesFloatInternal f1, fiftyoneDegreesFloatInternal f2);

153

159#if _MSC_VER || (FLT_RADIX == 2 && FLT_MANT_DIG == 24 && FLT_MAX_EXP == 128 && FLT_MIN_EXP == -125)

163typedef float fiftyoneDegreesFloat;

164

171#define FIFTYONE_DEGREES_FLOAT_TO_NATIVE(f) f

178#define FIFTYONE_DEGREES_NATIVE_TO_FLOAT(f) f

185#define FIFTYONE_DEGREES_FLOAT_IS_EQUAL(f1, f2) (f1 == f2 ? 0 : 1)

186#else

191typedef fiftyoneDegreesFloatInternal fiftyoneDegreesFloat;

198#define FIFTYONE_DEGREES_FLOAT_TO_NATIVE(f) fiftyoneDegreesFloatToNative(f)

205#define FIFTYONE_DEGREES_NATIVE_TO_FLOAT(f) fiftyoneDegreesNativeToFloat(f)

212#define FIFTYONE_DEGREES_FLOAT_IS_EQUAL(f1, f2) fiftyoneDegreesFloatIsEqual(f1, f2)

213#endif

214

218

219#endif

fiftyoneDegreesFloatToNative

float fiftyoneDegreesFloatToNative(fiftyoneDegreesFloatInternal f)

Function that converts from a 51Degrees float implementation to a native float value.

FIFTYONE_DEGREES_FLOAT_MANT_SIZE

#define FIFTYONE_DEGREES_FLOAT_MANT_SIZE

IEEE single precision floating point number of bits for mantissa.

Definition float.h:86

fiftyoneDegreesFloat

fiftyoneDegreesFloatInternal fiftyoneDegreesFloat

For some compilers such as clang and Microsoft C or computers where the IEEE single precision standar...

Definition float.h:191

fiftyoneDegreesFloatIsEqual

int fiftyoneDegreesFloatIsEqual(fiftyoneDegreesFloatInternal f1, fiftyoneDegreesFloatInternal f2)

Function that compare if two 51Degrees float values are equal.

fiftyoneDegreesNativeToFloat

fiftyoneDegreesFloatInternal fiftyoneDegreesNativeToFloat(float f)

Function that converts from a native float value to 51Degrees float value.

FIFTYONE_DEGREES_FLOAT_SIGN_SIZE

#define FIFTYONE_DEGREES_FLOAT_SIGN_SIZE

IEEE single precision floating point number of bits for sgn.

Definition float.h:78

FIFTYONE_DEGREES_FLOAT_EXP_SIZE

#define FIFTYONE_DEGREES_FLOAT_EXP_SIZE

IEEE single precision floating point number of bits for exponent.

Definition float.h:82

FIFTYONE_DEGREES_FLOAT_SIZE

#define FIFTYONE_DEGREES_FLOAT_SIZE

IEEE single precision floating point number of bytes.

Definition float.h:70

fiftyoneDegreesFloatInternal

Struture that represents 51Degrees implementation, which encapsulate an array of 4 bytes.

Definition float.h:115

fiftyoneDegreesFloatU

Union that breaks down 51Degrees implementation to its components: sign, exponent and mantissa.

Definition float.h:123