/*
 * $Id: spm_getdata.c 938 2007-10-12 19:09:31Z john $
 * John Ashburner
 */
 
/* Routines for accessing datatypes for images */

#include "spm_getdata.h"

short getshort(short x)
{
    char *p1, *p2; short y;
    p1 = (char *)(&x); p2 = (char *)(&y);
    p2[1] = p1[0]; p2[0] = p1[1];
    return(y);
}

unsigned short getushort(unsigned short x)
{
    char *p1, *p2; unsigned short y;
    p1 = (char *)(&x); p2 = (char *)(&y);
    p2[1] = p1[0]; p2[0] = p1[1];
    return(y);
}

int getint(int x)
{
    char *p1, *p2; int y;
    p1 = (char *)(&x); p2 = (char *)(&y);
    p2[3] = p1[0]; p2[2] = p1[1];
    p2[1] = p1[2]; p2[0] = p1[3];
    return(y);
}

unsigned int getuint(unsigned int x)
{
    char *p1, *p2; unsigned int y;
    p1 = (char *)(&x); p2 = (char *)(&y);
    p2[3] = p1[0]; p2[2] = p1[1];
    p2[1] = p1[2]; p2[0] = p1[3];
    return(y);
}

float getfloat(float x)
{
    char *p1, *p2; float y;
    p1 = (char *)(&x); p2 = (char *)(&y);
    p2[3] = p1[0]; p2[2] = p1[1];
    p2[1] = p1[2]; p2[0] = p1[3];
    return(y);
}

double getdouble(double x)
{
    char *p1, *p2; double y;
    p1 = (char *)(&x); p2 = (char *)(&y);
    p2[7] = p1[0]; p2[6] = p1[1];
    p2[5] = p1[2]; p2[4] = p1[3];
    p2[3] = p1[4]; p2[2] = p1[5];
    p2[1] = p1[6]; p2[0] = p1[7];
    return(y);
}