AuxConvert.c

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#include "fasp.h"
#include "fasp_functs.h"
 
/*---------------------------------*/
/*--      Public Functions       --*/
/*---------------------------------*/
 
unsigned long fasp_aux_change_endian4 (const unsigned long x)
{
    unsigned char *ptr = (unsigned char *)&x;
    return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
}
 
double fasp_aux_change_endian8 (const double x)
{
    double dbl;
    unsigned char *bytes, *buffer;
    
    buffer=(unsigned char *)&dbl;
    bytes=(unsigned char *)&x;
    
    buffer[0]=bytes[7];
    buffer[1]=bytes[6];
    buffer[2]=bytes[5];
    buffer[3]=bytes[4];
    buffer[4]=bytes[3];
    buffer[5]=bytes[2];
    buffer[6]=bytes[1];
    buffer[7]=bytes[0];
    return dbl;
}
 
double fasp_aux_bbyteToldouble (const unsigned char bytes[])
{
    double dbl;
    unsigned char *buffer;
    buffer=(unsigned char *)&dbl;
    buffer[0]=bytes[7];
    buffer[1]=bytes[6];
    buffer[2]=bytes[5];
    buffer[3]=bytes[4];
    buffer[4]=bytes[3];
    buffer[5]=bytes[2];
    buffer[6]=bytes[1];
    buffer[7]=bytes[0];
    return dbl;
}
 
/*---------------------------------*/
/*--        End of File          --*/
/*---------------------------------*/