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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 /*
33 * ecvt converts to decimal
34 * the number of digits is specified by ndigit
35 * decpt is set to the position of the decimal point
36 * sign is set to 0 for positive, 1 for negative
37 *
38 */
39
40 #pragma weak _ecvt = ecvt
41 #pragma weak _fcvt = fcvt
42
43 #include "lint.h"
44 #include <sys/types.h>
45 #include <stdlib.h>
46 #include <floatingpoint.h>
47 #include "tsd.h"
48
49 char *
ecvt(double number,int ndigits,int * decpt,int * sign)50 ecvt(double number, int ndigits, int *decpt, int *sign)
51 {
52 char *buf = tsdalloc(_T_ECVT, DECIMAL_STRING_LENGTH, NULL);
53
54 return (econvert(number, ndigits, decpt, sign, buf));
55 }
56
57 char *
fcvt(double number,int ndigits,int * decpt,int * sign)58 fcvt(double number, int ndigits, int *decpt, int *sign)
59 {
60 char *buf = tsdalloc(_T_ECVT, DECIMAL_STRING_LENGTH, NULL);
61 char *ptr, *val;
62 char ch;
63 int deci_val;
64
65 ptr = fconvert(number, ndigits, decpt, sign, buf);
66
67 val = ptr;
68 deci_val = *decpt;
69
70 while ((ch = *ptr) != 0) {
71 if (ch != '0') { /* You execute this if there are no */
72 /* leading zero's remaining. */
73 *decpt = deci_val; /* If there are leading zero's */
74 return (ptr); /* gets updated. */
75 }
76 ptr++;
77 deci_val--;
78 }
79 return (val);
80 }
81
82 char *
qecvt(long double number,int ndigits,int * decpt,int * sign)83 qecvt(
84 long double number,
85 int ndigits,
86 int *decpt,
87 int *sign)
88 {
89 char *buf = tsdalloc(_T_ECVT, DECIMAL_STRING_LENGTH, NULL);
90
91 return (qeconvert(&number, ndigits, decpt, sign, buf));
92 }
93
94 char *
qfcvt(long double number,int ndigits,int * decpt,int * sign)95 qfcvt(long double number, int ndigits, int *decpt, int *sign)
96 {
97 char *buf = tsdalloc(_T_ECVT, DECIMAL_STRING_LENGTH, NULL);
98
99 return (qfconvert(&number, ndigits, decpt, sign, buf));
100 }
101
102 char *
qgcvt(long double number,int ndigits,char * buffer)103 qgcvt(long double number, int ndigits, char *buffer)
104 {
105 return (qgconvert(&number, ndigits, 0, buffer));
106 }
107