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 * 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 * 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 * 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 * 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 * 103 qgcvt(long double number, int ndigits, char *buffer) 104 { 105 return (qgconvert(&number, ndigits, 0, buffer)); 106 } 107