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/***
* istrint.cxx - definitions for istream class operaotor>>(int) member functions
*
* Copyright (c) 1991-1992, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Definitions of operator>>(int) member function(s) for istream class.
* [AT&T C++]
*
*Revision History:
* 09-26-91 KRS Created. Split out from istream.cxx for granularity.
* 12-30-92 KRS Fix indirection problem with **endptr.
*
*******************************************************************************/
#include <cruntime.h>
#include <internal.h>
#include <stdlib.h>
#include <limits.h>
#include <iostream.h>
#pragma hdrstop
// CONSIDER: validify all this maximum length
#define MAXLONGSIZ 16
/***
*istream& istream::operator>>(int& n) - extract int
*
*Purpose:
* Extract int value from stream
*
*Entry:
* n = value to update
*
*Exit:
* n updated, or ios::failbit & n=INT_MAX/INT_MIN on overflow/underflow
*
*Exceptions:
* Stream error on entry or value out of range
*
*******************************************************************************/
istream& istream::operator>>(int& n)
{
_WINSTATIC char ibuffer[MAXLONGSIZ];
long value;
char ** endptr = (char**)NULL;
if (ipfx(0))
{
value = strtol(ibuffer, endptr, getint(ibuffer));
if (value>INT_MAX)
{
n = INT_MAX;
state |= ios::failbit;
}
else if (value<INT_MIN)
{
n = INT_MIN;
state |= ios::failbit;
}
else
n = (int) value;
#if 0
if (**endptr)
{
// UNDONE: put back any unread characters, if possible
}
#endif
isfx();
}
return *this;
}
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