BinIO.cpp

#include <stdio.h>
#include "BinIO.h"
 
size_t fwrite_big(void *buffer,size_t size,size_t count, FILE *stream)
{
    const unsigned long long mx=0x80000000;
    unsigned long long j,n,st;
    size_t ret=0;
    char *buf2;
 
    st=mx/((unsigned long long) size);
    n=count/st;
    for(j=0;j<n;j++)
        {
        buf2=((char *)buffer)+j*st*size;
        ret+=(fwrite(buf2,size,(size_t) st,stream));
        }
    buf2=((char *)buffer)+n*st*size;
    ret+=(fwrite(buf2,size,(size_t) (count-n*st),stream));
    return ret;
}
 
size_t fread_big(void *buffer,size_t size,size_t count, FILE *stream)
{
    const unsigned long long mx=0x80000000;
    unsigned long long j,n,st;
    size_t ret=0;
    char *buf2;
 
    st=mx/((unsigned long long) size);
    n=count/st;
    for(j=0;j<n;j++)
        {
        buf2=((char *)buffer)+j*st*size;
        ret+=(fread(buf2,size,(size_t) st,stream));
        }
    buf2=((char *)buffer)+n*st*size;
    ret+=(fread(buf2,size,(size_t) (count-n*st),stream));
    return ret;
}