basic.h

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#ifndef _BASIC_H_
#define _BASIC_H_

#include <math.h>
#include <stdio.h>
#include <stdlib.h>

#ifdef MATLAB_MEX_FILE
    #include "mex.h"
    #define Malloc(s)    mxMalloc(s)
    #define Free(p)      mxFree(p)
#else
    /* Memory management */
    #define Malloc(s)               MallocWithErrorMessage(s)
    void *MallocWithErrorMessage(size_t Size);
    #define Realloc(p, s)           ReallocWithErrorMessage(p, s)
    void *ReallocWithErrorMessage(void *Ptr, size_t Size);
    #define Free(p)                 free(p)
#endif


/* Portable integer types */
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)

    /* Windows system: Use __intN types to define uint8_t, etc. */
    typedef unsigned __int8 uint8_t;
    typedef unsigned __int16 uint16_t;
    typedef unsigned __int32 uint32_t;
    typedef __int8 int8_t;
    typedef __int16 int16_t;
    typedef __int32 int32_t;
    
#else

    /* UNIX system: Use stdint to define uint8_t, etc. */
    #include <stdint.h>

#endif


/* Math constants (Hart & Cheney) */
#ifndef M_2PI

#define M_2PI       6.28318530717958647692528676655900576
#endif
#ifndef M_PI

#define M_PI        3.14159265358979323846264338327950288
#endif
#ifndef M_PI_2

#define M_PI_2      1.57079632679489661923132169163975144
#endif
#ifndef M_PI_4

#define M_PI_4      0.78539816339744830961566084581987572
#endif
#ifndef M_PI_8

#define M_PI_8      0.39269908169872415480783042290993786
#endif
#ifndef M_SQRT2

#define M_SQRT2     1.41421356237309504880168872420969808
#endif
#ifndef M_1_SQRT2

#define M_1_SQRT2   0.70710678118654752440084436210484904
#endif
#ifndef M_E

#define M_E         2.71828182845904523536028747135266250
#endif
#ifndef M_LOG2E

#define M_LOG2E     1.44269504088896340735992468100189213
#endif
#ifndef M_LOG10E

#define M_LOG10E    0.43429448190325182765112891891660508
#endif
#ifndef M_LN2

#define M_LN2       0.69314718055994530941723212145817657
#endif
#ifndef M_LN10

#define M_LN10      2.30258509299404568401799145468436421
#endif
#ifndef M_EULER

#define M_EULER     0.57721566490153286060651209008240243
#endif

#define ROUND(X) (floor((X) + 0.5))

#define ROUNDF(X) (floor((X) + 0.5f))


#ifdef __GNUC__
    #ifndef ATTRIBUTE_UNUSED

    #define ATTRIBUTE_UNUSED __attribute__((unused))
    #endif
    #ifndef ATTRIBUTE_ALWAYSINLINE

    #define ATTRIBUTE_ALWAYSINLINE __attribute__((always_inline))
    #endif
#else
    #define ATTRIBUTE_UNUSED
    #define ATTRIBUTE_ALWAYSINLINE
#endif


/* Error messaging */
void ErrorMessage(const char *Format, ...);

/* Timer function */
unsigned long Clock();

#endif /* _BASIC_H_ */