usr/src/lib/libbc/libc/gen/common/ieee_globals.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 #pragma ident   "%Z%%M% %I%     %E% SMI"
  23
  24 /*
  25  * Copyright (c) 1987 by Sun Microsystems, Inc.
  26  */
  27
  28 /*
  29  * contains definitions for variables for IEEE floating-point arithmetic
  30  * modes; IEEE floating-point arithmetic exception handling;
  31  */
  32
  33 #include <floatingpoint.h>
  34
  35 enum fp_direction_type fp_direction;
  36 /*
  37  * Current rounding direction. Updated by ieee_flags.
  38  */
  39
  40 enum fp_precision_type fp_precision;
  41 /*
  42  * Current rounding precision. Updated by ieee_flags.
  43  */
  44
  45 sigfpe_handler_type ieee_handlers[N_IEEE_EXCEPTION];
  46 /*
  47  * Array of pointers to functions to handle SIGFPE's corresponding to IEEE
  48  * fp_exceptions. sigfpe_default means do not generate SIGFPE. An invalid
  49  * address such as sigfpe_abort will cause abort on that SIGFPE. Updated by
  50  * ieee_handler.
  51  */
  52 fp_exception_field_type fp_accrued_exceptions;
  53 /*
  54  * Sticky accumulated exceptions, updated by ieee_flags. In hardware
  55  * implementations this variable is not automatically updated as the hardware
  56  * changes and should therefore not be relied on directly.
  57  */