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/*
* tclWinMtherr.c --
*
* This function provides a default implementation of the
* _matherr function for Borland C++.
*
* Copyright (c) 1995 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclWinMtherr.c,v 1.2 1998/09/14 18:40:20 stanton Exp $
*/
#include "tclInt.h"
#include "tclPort.h"
#include <math.h>
/*
* The following variable is secretly shared with Tcl so we can
* tell if expression evaluation is in progress. If not, matherr
* just emulates the default behavior, which includes printing
* a message.
*/
extern int tcl_MathInProgress;
/*
*----------------------------------------------------------------------
*
* _matherr --
*
* This procedure is invoked by Borland C++ when certain
* errors occur in mathematical functions. This procedure
* replaces the default implementation which generates pop-up
* warnings.
*
* Results:
* Returns 1 to indicate that we've handled the error
* locally.
*
* Side effects:
* Sets errno based on what's in xPtr.
*
*----------------------------------------------------------------------
*/
int
_matherr(xPtr)
struct exception *xPtr; /* Describes error that occurred. */
{
if (!tcl_MathInProgress) {
return 0;
}
if ((xPtr->type == DOMAIN) || (xPtr->type == SING)) {
errno = EDOM;
} else {
errno = ERANGE;
}
return 1;
}
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