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 /*
31 * ecvt converts to decimal
32 * the number of digits is specified by ndigit
33 * decpt is set to the position of the decimal point
34 * sign is set to 0 for positive, 1 for negative
35 *
36 */
37
38 #pragma weak _ecvt = ecvt
39 #pragma weak _fcvt = fcvt
40
41 #include "lint.h"
42 #include <sys/types.h>
43 #include <stdlib.h>
44 #include <floatingpoint.h>
45 #include "tsd.h"
46
47 char *
ecvt(double number,int ndigits,int * decpt,int * sign)48 ecvt(double number, int ndigits, int *decpt, int *sign)
49 {
50 char *buf = tsdalloc(_T_ECVT, DECIMAL_STRING_LENGTH, NULL);
51
52 return (econvert(number, ndigits, decpt, sign, buf));
53 }
54
55 char *
fcvt(double number,int ndigits,int * decpt,int * sign)56 fcvt(double number, int ndigits, int *decpt, int *sign)
57 {
58 char *buf = tsdalloc(_T_ECVT, DECIMAL_STRING_LENGTH, NULL);
59 char *ptr, *val;
60 char ch;
61 int deci_val;
62
63 ptr = fconvert(number, ndigits, decpt, sign, buf);
64
65 val = ptr;
66 deci_val = *decpt;
67
68 while ((ch = *ptr) != 0) {
69 if (ch != '0') { /* You execute this if there are no */
70 /* leading zero's remaining. */
71 *decpt = deci_val; /* If there are leading zero's */
72 return (ptr); /* gets updated. */
73 }
74 ptr++;
75 deci_val--;
76 }
77 return (val);
78 }
79
80 char *
qecvt(number,ndigits,decpt,sign)81 qecvt(number, ndigits, decpt, sign)
82 long double number;
83 int ndigits;
84 int *decpt;
85 int *sign;
86 {
87 char *buf = tsdalloc(_T_ECVT, DECIMAL_STRING_LENGTH, NULL);
88
89 return (qeconvert(&number, ndigits, decpt, sign, buf));
90 }
91
92 char *
qfcvt(long double number,int ndigits,int * decpt,int * sign)93 qfcvt(long double number, int ndigits, int *decpt, int *sign)
94 {
95 char *buf = tsdalloc(_T_ECVT, DECIMAL_STRING_LENGTH, NULL);
96
97 return (qfconvert(&number, ndigits, decpt, sign, buf));
98 }
99
100 char *
qgcvt(long double number,int ndigits,char * buffer)101 qgcvt(long double number, int ndigits, char *buffer)
102 {
103 return (qgconvert(&number, ndigits, 0, buffer));
104 }
105