Category : C++ Source Code
Archive   : VCCRT1.ZIP
Filename : ISTRUINT.CXX

 
Output of file : ISTRUINT.CXX contained in archive : VCCRT1.ZIP
/***
* istruint.cxx - definitions for istream class operaotor>>(unsigned int) funct
*
* Copyright (c) 1991-1992, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Definitions of operator>>(unsigned int) member function for istream
* class.
* [AT&T C++]
*
*******************************************************************************/

#include
#include
#include
#include
#include
#pragma hdrstop

// CONSIDER: validify all this maximum length
#define MAXLONGSIZ 16

/***
*istream& istream::operator>>(unsigned int& n) - extract unsigned int
*
*Purpose:
* Extract unsigned int value from stream
* Valid range is INT_MIN to UINT_MAX.
*
*Entry:
* n = value to update
*
*Exit:
* n updated, or ios::failbit and n=UINT_MAX if error
*
*Exceptions:
* Stream error on entry or value out of range
*
*******************************************************************************/
istream& istream::operator>>(unsigned int& n)

{
_WINSTATIC char ibuffer[MAXLONGSIZ];
unsigned long value;
char ** endptr = (char**)NULL;
if (ipfx(0)) {
value = strtoul(ibuffer, endptr, getint(ibuffer));

// CONSIDER: all but the first check is to emulate strtoul behavior
if (((value>UINT_MAX) && (value<=(ULONG_MAX-(-INT_MIN))))
|| ((value==ULONG_MAX) && (errno==ERANGE)))
{
n = UINT_MAX;
state |= ios::failbit;
}
else
n = (unsigned int) value;
#if 0
if (**endptr)
{
//UNDONE: put back any unread characters, if possible
}
#endif
isfx();
}
return *this;
}


  3 Responses to “Category : C++ Source Code
Archive   : VCCRT1.ZIP
Filename : ISTRUINT.CXX
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

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