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 #include <errno.h>
29 #include <stdio.h>
30 #include <values.h>
31 #include <floatingpoint.h>
32
33 double
strtod(cp,ptr)34 strtod(cp, ptr)
35 char *cp;
36 char **ptr;
37 {
38 double x;
39 decimal_mode mr;
40 decimal_record dr;
41 fp_exception_field_type fs;
42 enum decimal_string_form form;
43 char *pechar;
44
45 string_to_decimal(&cp, MAXINT, 0, &dr, &form, &pechar);
46 if (ptr != (char **) NULL)
47 *ptr = cp;
48 if (form == invalid_form)
49 return 0.0; /* Shameful kluge for SVID's sake. */
50 mr.rd = fp_direction;
51 decimal_to_double(&x, &mr, &dr, &fs);
52 if (fs & (1 << fp_overflow)) { /* Overflow. */
53 errno = ERANGE;
54 }
55 if (fs & (1 << fp_underflow)) { /* underflow */
56 errno = ERANGE;
57 }
58 return x;
59 }
60