srm_stds.h File Reference

Defines the 'base' SRM types. More...

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Defines
#define	EXPORT_DLL
#define	SRM_BIG_ENDIAN
#define	SRM_INTEGER_MAX   2147483647
#define	SRM_INTEGER_MIN   (-2147483647-1)
#define	SRM_INTEGER_UNSIGNED_MAX   4294967295U
#define	SRM_INTEGER_UNSIGNED_MIN   0
#define	SRM_INTEGER_POSITIVE_MAX   4294967295U
#define	SRM_INTEGER_POSITIVE_MIN   1
#define	SRM_POSITIVE_INFINITY   (*(SRM_Long_Float *)__srm_64_pos_infinity)
#define	SRM_NEGATIVE_INFINITY   (*(SRM_Long_Float *)__srm_64_neg_infinity)
#define	SRM_EQUAL(a, b, delta)
Typedefs
typedef int	SRM_Integer
typedef unsigned int	SRM_Integer_Unsigned
typedef unsigned int	SRM_Integer_Positive
typedef double	SRM_Long_Float
Enumerations
enum	SRM_Boolean { SRM_FALSE = 0, SRM_TRUE = 1 }
Functions
const char *	SRM_GetImplVerInfo (void)
	This function returns the implementation version of the SRM component.
Variables
const unsigned int	__srm_64_pos_infinity [2]
const unsigned int	__srm_64_neg_infinity [2]

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Detailed Description

Defines the 'base' SRM types.

Author:

Bill Horan (SAIC)

CHANGE THIS FILE, IF NEEDED, TO MATCH YOUR MACHINE!

This file:

• defines whether your machine is Big or Little Endian (THIS MAY NEED TO BE CHANGED TO MATCH YOUR MACHINE)

• defines the 'base' SRM types: (THESE MAY NEED TO BE CHANGED TO MATCH YOUR MACHINE) signed 8, 16, and 32 bit integers, unsigned 8, 16, and 32 bit integers, 32 and 64 bit floating point numbers

• defines a boolean type (SRM_Boolean), along with true and false values (SRM_TRUE and SRM_FALSE)

• defines constants that signify Positive and Negative Infinity within SRM (the constants used are the appropriate IEEE values)

• defines constants that signify min and max values for the 'base' SRM numeric types

YOU WILL NEED TO CHANGE THIS FILE:

• IF YOUR MACHINE IS NOT BIG ENDIAN
• IF YOUR MACHINE USES INTs OR FLOATs WITH DIFFERENT SIZES THAN THOSE USED IN THE PROVIDED DEFINITIONS

By 'default', this header file is designed for a Big Endian machine with a 32 bit integer. The 'default' type definitions are:

(SRM Base Type -- machine specific type)

• signed 8 bit integer -- signed char
• signed 16 bit integer -- short
• signed 32 bit integer -- int
• unsigned 8 bit integer -- unsigned char
• unsigned 16 bit integer -- unsigned short
• unsigned 32 bit integer -- unsigned int
• positive 8 bit integer -- unsigned char
• positive 16 bit integer -- unsigned short
• positive 32 bit integer -- unsigned int
• 32 bit float -- float
• 64 bit float -- double

IF THESE "machine specific" TYPES ARE NOT CORRECT FOR YOUR MACHINE, THEN CHANGE THE DEFINITIONS TO THE APPROPRIATE MACHINE SPECIFIC TYPES USED IN THE "typedef" STATEMENTS TO BE CORRECT FOR YOUR MACHINE.

For example, if on your machine an int is 16 bits, and a long int is 32 bits, then you would probably change the integer declarations to read as follows:

• typedef long int SRM_Integer;

• typedef unsigned long SRM_Integer_Unsigned;

• typedef unsigned long SRM_Integer_Positive;

IF YOUR MACHINE IS NOT DEFINED AS A LITTLE ENDIAN MACHINE, THEN ADD THE APPROPRIATE #defined() TO THE LINE THAT READS

• "#if defined(CPUARCH_i386)..."

This file is the only SRM file that should need to be changed due to machine (platform/OS) differences.

For other release dates/detailed changes, contact SAIC.

Definition in file srm_stds.h.

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Define Documentation

#define SRM_EQUAL (  a, b, delta   )

Value: ( ((a) == (b)) || \ ((a)-(delta) < (b) && (a)+(delta) > (b)) ) MACRO: SRM_EQUAL A convenient macro to test whether two floating point numbers are within delta of each other (to avoid the classic problem of using == to compare equality among floating point numbers) Definition at line 197 of file srm_stds.h.

#define SRM_INTEGER_MAX   2147483647

Used to define the max integer value. Definition at line 143 of file srm_stds.h.

#define SRM_INTEGER_MIN   (-2147483647-1)

Used to define the min integer value. Definition at line 147 of file srm_stds.h.

#define SRM_INTEGER_POSITIVE_MAX   4294967295U

Used to define the max integer positive value. Definition at line 159 of file srm_stds.h.

#define SRM_INTEGER_POSITIVE_MIN   1

Used to define the min integer positive value. Definition at line 163 of file srm_stds.h.

#define SRM_INTEGER_UNSIGNED_MAX   4294967295U

Used to define the max integer unsigned value. Definition at line 151 of file srm_stds.h.

#define SRM_INTEGER_UNSIGNED_MIN   0

Used to define the min integer unsigned value. Definition at line 155 of file srm_stds.h.

#define SRM_NEGATIVE_INFINITY   (*(SRM_Long_Float *)__srm_64_neg_infinity)

The constant negative 64 infinity value. Definition at line 188 of file srm_stds.h.

#define SRM_POSITIVE_INFINITY   (*(SRM_Long_Float *)__srm_64_pos_infinity)

The constant positive 64 infinity value. Definition at line 184 of file srm_stds.h.

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Typedef Documentation

typedef int SRM_Integer

SRM's integer Definition at line 117 of file srm_stds.h.

typedef unsigned int SRM_Integer_Positive

SRM's integer positive Definition at line 123 of file srm_stds.h.

typedef unsigned int SRM_Integer_Unsigned

SRM's integer unsigned Definition at line 120 of file srm_stds.h.

typedef double SRM_Long_Float

SRM's long float Definition at line 127 of file srm_stds.h.

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Enumeration Type Documentation

enum SRM_Boolean

ENUM: SRM_Boolean Boolean. Enumeration values: SRM_FALSE  False value SRM_TRUE  True value Definition at line 134 of file srm_stds.h.

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Function Documentation

const char* SRM_GetImplVerInfo (  void   )

This function returns the implementation version of the SRM component. Returns: the appropriate version string

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Variable Documentation

const unsigned int __srm_64_neg_infinity[2]

Used to define the negative 64 infinity value. Definition at line 178 of file srm_stds.h.

const unsigned int __srm_64_pos_infinity[2]

Used to define the positive 64 infinity value. Definition at line 171 of file srm_stds.h.

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Spatial Reference Model C++ API	Version 4.1 - 26 Jun 2006
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