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- /*
- * tclMatherr.c --
- *
- * This function provides a default implementation of the
- * "matherr" function, for SYS-V systems where it's needed.
- *
- * Copyright (c) 1993 The Regents of the University of California.
- * All rights reserved.
- *
- * Permission is hereby granted, without written agreement and without
- * license or royalty fees, to use, copy, modify, and distribute this
- * software and its documentation for any purpose, provided that the
- * above copyright notice and the following two paragraphs appear in
- * all copies of this software.
- *
- * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
- * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
- * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
- * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
- * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- */
-
- #include "std-c.h"
- #include <math.h>
- #include "std-os.h"
-
- #ifdef NO_ERRNO_H
- extern int errno;
- #define EDOM 33
- #define ERANGE 34
- #endif
-
-
- /*
- *----------------------------------------------------------------------
- *
- * matherr --
- *
- * This procedure is invoked on Sys-V systems when certain
- * errors occur in mathematical functions. Type "man matherr"
- * for more information on how this function works.
- *
- * 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 ((xPtr->type == DOMAIN) || (xPtr->type == SING)) {
- errno = EDOM;
- } else {
- errno = ERANGE;
- }
- return 1;
- }
-