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) 1988 by Sun Microsystems, Inc. 26 */ 27 28 #include "base_conversion.h" 29 30 char * 31 seconvert(arg, ndigits, decpt, sign, buf) 32 single *arg; 33 int ndigits, *decpt, *sign; 34 char *buf; 35 { 36 decimal_mode dm; 37 decimal_record dr; 38 fp_exception_field_type ef; 39 int i; 40 static char *nanstring = "NaN"; 41 static char *infstring = "Infinity"; 42 char *pc; 43 int nc; 44 45 dm.rd = fp_direction; /* Rounding direction. */ 46 dm.df = floating_form; /* E format. */ 47 dm.ndigits = ndigits; /* Number of significant digits. */ 48 single_to_decimal(arg, &dm, &dr, &ef); 49 *sign = dr.sign; 50 switch (dr.fpclass) { 51 case fp_normal: 52 case fp_subnormal: 53 *decpt = dr.exponent + ndigits; 54 for (i = 0; i < ndigits; i++) 55 buf[i] = dr.ds[i]; 56 buf[ndigits] = 0; 57 break; 58 case fp_zero: 59 *decpt = 1; 60 for (i = 0; i < ndigits; i++) 61 buf[i] = '0'; 62 buf[ndigits] = 0; 63 break; 64 case fp_infinity: 65 *decpt = 0; 66 pc = infstring; 67 if (ndigits < 8) 68 nc = 3; 69 else 70 nc = 8; 71 goto movestring; 72 case fp_quiet: 73 case fp_signaling: 74 *decpt = 0; 75 pc = nanstring; 76 nc = 3; 77 movestring: 78 for (i = 0; i < nc; i++) 79 buf[i] = pc[i]; 80 buf[nc] = 0; 81 break; 82 } 83 return buf; /* For compatibility with ecvt. */ 84 } 85 86 char * 87 sfconvert(arg, ndigits, decpt, sign, buf) 88 single *arg; 89 int ndigits, *decpt, *sign; 90 char *buf; 91 { 92 decimal_mode dm; 93 decimal_record dr; 94 fp_exception_field_type ef; 95 int i; 96 97 dm.rd = fp_direction; /* Rounding direction. */ 98 dm.df = fixed_form; /* F format. */ 99 dm.ndigits = ndigits; /* Number of digits after point. */ 100 single_to_decimal(arg, &dm, &dr, &ef); 101 *sign = dr.sign; 102 switch (dr.fpclass) { 103 case fp_normal: 104 case fp_subnormal: 105 if (ndigits >= 0) 106 *decpt = dr.ndigits - ndigits; 107 else 108 *decpt = dr.ndigits; 109 for (i = 0; i < dr.ndigits; i++) 110 buf[i] = dr.ds[i]; 111 buf[dr.ndigits] = 0; 112 break; 113 case fp_zero: 114 *decpt = 0; 115 buf[0] = '0'; 116 for (i = 1; i < ndigits; i++) 117 buf[i] = '0'; 118 buf[i] = 0; 119 break; 120 case fp_infinity: 121 *decpt = 0; 122 if (ndigits < 8) 123 buf = "Inf"; 124 else 125 buf = "Infinity"; 126 break; 127 case fp_quiet: 128 case fp_signaling: 129 *decpt = 0; 130 buf = "NaN"; 131 break; 132 } 133 return buf; /* For compatibility with fcvt. */ 134 } 135 136 extern void _gcvt(); 137 138 char * 139 sgconvert(number, ndigit, trailing, buf) 140 single *number; 141 int ndigit, trailing; 142 char *buf; 143 { 144 decimal_mode dm; 145 decimal_record dr; 146 fp_exception_field_type fef; 147 148 dm.rd = fp_direction; 149 dm.df = floating_form; 150 dm.ndigits = ndigit; 151 single_to_decimal(number, &dm, &dr, &fef); 152 _gcvt(ndigit, &dr, trailing, buf); 153 return (buf); 154 } 155