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UDF.cc

#include "UDF.h"
int  UDF_CPUisBigEndian() {
 int a=1 ;
 int i=sizeof(int) ;
 char *b ;
 
 b=((char *)&a) + (i-1) ;
 if (*b) return 1 ;
 else    return 0 ;
}

void UDF_swap(void *p, size_t size, size_t nitem) {
  /* assert((size&1)==0) ; */
 
 char *p1=(char *)p , a ;
  
 for (unsigned int j=0; j<nitem; j++) {
   for (unsigned int i=0; i<size/2; i++) {
     a           =p1[i] ;
     p1[i]       =p1[size-1-i] ;
     p1[size-1-i]=a ;
   }
   p1=&p1[size] ;
 } 
}

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