windows-nt/Source/XPSP1/NT/base/crts/crtw32/iostream/istrldbl.cpp
2020-09-26 16:20:57 +08:00

43 lines
1 KiB
C++

/***
* istrldbl.cpp - definitions for istream class operator>>(long double) funct
*
* Copyright (c) 1991-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Definitions of operator>>(long double) member function for istream
* class.
* [AT&T C++]
*
*Revision History:
* 09-26-91 KRS Created. Split off from istream.cxx for granularity.
* 12-30-92 KRS Fix indirection problem with **endptr.
* 05-10-93 CFW Re-enable function, use strtod since no _strtold.
* 06-14-95 CFW Comment cleanup.
*
*******************************************************************************/
#include <cruntime.h>
#include <internal.h>
#include <stdlib.h>
#include <iostream.h>
#pragma hdrstop
#pragma check_stack(on) // large buffer(s)
#define MAXLDBLSIZ 32
istream& istream::operator>>(long double& n)
{
_WINSTATIC char ibuffer[MAXLDBLSIZ];
char ** endptr = (char**)NULL;
if (ipfx(0))
{
if (getdouble(ibuffer, MAXLDBLSIZ)>0)
{
n = (long double)strtod(ibuffer, endptr);
}
isfx();
}
return *this;
}