1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 23*7c478bd9Sstevel@tonic-gate 24*7c478bd9Sstevel@tonic-gate /* 25*7c478bd9Sstevel@tonic-gate * Copyright (c) 1988 by Sun Microsystems, Inc. 26*7c478bd9Sstevel@tonic-gate */ 27*7c478bd9Sstevel@tonic-gate 28*7c478bd9Sstevel@tonic-gate #include "base_conversion.h" 29*7c478bd9Sstevel@tonic-gate 30*7c478bd9Sstevel@tonic-gate char * 31*7c478bd9Sstevel@tonic-gate seconvert(arg, ndigits, decpt, sign, buf) 32*7c478bd9Sstevel@tonic-gate single *arg; 33*7c478bd9Sstevel@tonic-gate int ndigits, *decpt, *sign; 34*7c478bd9Sstevel@tonic-gate char *buf; 35*7c478bd9Sstevel@tonic-gate { 36*7c478bd9Sstevel@tonic-gate decimal_mode dm; 37*7c478bd9Sstevel@tonic-gate decimal_record dr; 38*7c478bd9Sstevel@tonic-gate fp_exception_field_type ef; 39*7c478bd9Sstevel@tonic-gate int i; 40*7c478bd9Sstevel@tonic-gate static char *nanstring = "NaN"; 41*7c478bd9Sstevel@tonic-gate static char *infstring = "Infinity"; 42*7c478bd9Sstevel@tonic-gate char *pc; 43*7c478bd9Sstevel@tonic-gate int nc; 44*7c478bd9Sstevel@tonic-gate 45*7c478bd9Sstevel@tonic-gate dm.rd = fp_direction; /* Rounding direction. */ 46*7c478bd9Sstevel@tonic-gate dm.df = floating_form; /* E format. */ 47*7c478bd9Sstevel@tonic-gate dm.ndigits = ndigits; /* Number of significant digits. */ 48*7c478bd9Sstevel@tonic-gate single_to_decimal(arg, &dm, &dr, &ef); 49*7c478bd9Sstevel@tonic-gate *sign = dr.sign; 50*7c478bd9Sstevel@tonic-gate switch (dr.fpclass) { 51*7c478bd9Sstevel@tonic-gate case fp_normal: 52*7c478bd9Sstevel@tonic-gate case fp_subnormal: 53*7c478bd9Sstevel@tonic-gate *decpt = dr.exponent + ndigits; 54*7c478bd9Sstevel@tonic-gate for (i = 0; i < ndigits; i++) 55*7c478bd9Sstevel@tonic-gate buf[i] = dr.ds[i]; 56*7c478bd9Sstevel@tonic-gate buf[ndigits] = 0; 57*7c478bd9Sstevel@tonic-gate break; 58*7c478bd9Sstevel@tonic-gate case fp_zero: 59*7c478bd9Sstevel@tonic-gate *decpt = 1; 60*7c478bd9Sstevel@tonic-gate for (i = 0; i < ndigits; i++) 61*7c478bd9Sstevel@tonic-gate buf[i] = '0'; 62*7c478bd9Sstevel@tonic-gate buf[ndigits] = 0; 63*7c478bd9Sstevel@tonic-gate break; 64*7c478bd9Sstevel@tonic-gate case fp_infinity: 65*7c478bd9Sstevel@tonic-gate *decpt = 0; 66*7c478bd9Sstevel@tonic-gate pc = infstring; 67*7c478bd9Sstevel@tonic-gate if (ndigits < 8) 68*7c478bd9Sstevel@tonic-gate nc = 3; 69*7c478bd9Sstevel@tonic-gate else 70*7c478bd9Sstevel@tonic-gate nc = 8; 71*7c478bd9Sstevel@tonic-gate goto movestring; 72*7c478bd9Sstevel@tonic-gate case fp_quiet: 73*7c478bd9Sstevel@tonic-gate case fp_signaling: 74*7c478bd9Sstevel@tonic-gate *decpt = 0; 75*7c478bd9Sstevel@tonic-gate pc = nanstring; 76*7c478bd9Sstevel@tonic-gate nc = 3; 77*7c478bd9Sstevel@tonic-gate movestring: 78*7c478bd9Sstevel@tonic-gate for (i = 0; i < nc; i++) 79*7c478bd9Sstevel@tonic-gate buf[i] = pc[i]; 80*7c478bd9Sstevel@tonic-gate buf[nc] = 0; 81*7c478bd9Sstevel@tonic-gate break; 82*7c478bd9Sstevel@tonic-gate } 83*7c478bd9Sstevel@tonic-gate return buf; /* For compatibility with ecvt. */ 84*7c478bd9Sstevel@tonic-gate } 85*7c478bd9Sstevel@tonic-gate 86*7c478bd9Sstevel@tonic-gate char * 87*7c478bd9Sstevel@tonic-gate sfconvert(arg, ndigits, decpt, sign, buf) 88*7c478bd9Sstevel@tonic-gate single *arg; 89*7c478bd9Sstevel@tonic-gate int ndigits, *decpt, *sign; 90*7c478bd9Sstevel@tonic-gate char *buf; 91*7c478bd9Sstevel@tonic-gate { 92*7c478bd9Sstevel@tonic-gate decimal_mode dm; 93*7c478bd9Sstevel@tonic-gate decimal_record dr; 94*7c478bd9Sstevel@tonic-gate fp_exception_field_type ef; 95*7c478bd9Sstevel@tonic-gate int i; 96*7c478bd9Sstevel@tonic-gate 97*7c478bd9Sstevel@tonic-gate dm.rd = fp_direction; /* Rounding direction. */ 98*7c478bd9Sstevel@tonic-gate dm.df = fixed_form; /* F format. */ 99*7c478bd9Sstevel@tonic-gate dm.ndigits = ndigits; /* Number of digits after point. */ 100*7c478bd9Sstevel@tonic-gate single_to_decimal(arg, &dm, &dr, &ef); 101*7c478bd9Sstevel@tonic-gate *sign = dr.sign; 102*7c478bd9Sstevel@tonic-gate switch (dr.fpclass) { 103*7c478bd9Sstevel@tonic-gate case fp_normal: 104*7c478bd9Sstevel@tonic-gate case fp_subnormal: 105*7c478bd9Sstevel@tonic-gate if (ndigits >= 0) 106*7c478bd9Sstevel@tonic-gate *decpt = dr.ndigits - ndigits; 107*7c478bd9Sstevel@tonic-gate else 108*7c478bd9Sstevel@tonic-gate *decpt = dr.ndigits; 109*7c478bd9Sstevel@tonic-gate for (i = 0; i < dr.ndigits; i++) 110*7c478bd9Sstevel@tonic-gate buf[i] = dr.ds[i]; 111*7c478bd9Sstevel@tonic-gate buf[dr.ndigits] = 0; 112*7c478bd9Sstevel@tonic-gate break; 113*7c478bd9Sstevel@tonic-gate case fp_zero: 114*7c478bd9Sstevel@tonic-gate *decpt = 0; 115*7c478bd9Sstevel@tonic-gate buf[0] = '0'; 116*7c478bd9Sstevel@tonic-gate for (i = 1; i < ndigits; i++) 117*7c478bd9Sstevel@tonic-gate buf[i] = '0'; 118*7c478bd9Sstevel@tonic-gate buf[i] = 0; 119*7c478bd9Sstevel@tonic-gate break; 120*7c478bd9Sstevel@tonic-gate case fp_infinity: 121*7c478bd9Sstevel@tonic-gate *decpt = 0; 122*7c478bd9Sstevel@tonic-gate if (ndigits < 8) 123*7c478bd9Sstevel@tonic-gate buf = "Inf"; 124*7c478bd9Sstevel@tonic-gate else 125*7c478bd9Sstevel@tonic-gate buf = "Infinity"; 126*7c478bd9Sstevel@tonic-gate break; 127*7c478bd9Sstevel@tonic-gate case fp_quiet: 128*7c478bd9Sstevel@tonic-gate case fp_signaling: 129*7c478bd9Sstevel@tonic-gate *decpt = 0; 130*7c478bd9Sstevel@tonic-gate buf = "NaN"; 131*7c478bd9Sstevel@tonic-gate break; 132*7c478bd9Sstevel@tonic-gate } 133*7c478bd9Sstevel@tonic-gate return buf; /* For compatibility with fcvt. */ 134*7c478bd9Sstevel@tonic-gate } 135*7c478bd9Sstevel@tonic-gate 136*7c478bd9Sstevel@tonic-gate extern void _gcvt(); 137*7c478bd9Sstevel@tonic-gate 138*7c478bd9Sstevel@tonic-gate char * 139*7c478bd9Sstevel@tonic-gate sgconvert(number, ndigit, trailing, buf) 140*7c478bd9Sstevel@tonic-gate single *number; 141*7c478bd9Sstevel@tonic-gate int ndigit, trailing; 142*7c478bd9Sstevel@tonic-gate char *buf; 143*7c478bd9Sstevel@tonic-gate { 144*7c478bd9Sstevel@tonic-gate decimal_mode dm; 145*7c478bd9Sstevel@tonic-gate decimal_record dr; 146*7c478bd9Sstevel@tonic-gate fp_exception_field_type fef; 147*7c478bd9Sstevel@tonic-gate 148*7c478bd9Sstevel@tonic-gate dm.rd = fp_direction; 149*7c478bd9Sstevel@tonic-gate dm.df = floating_form; 150*7c478bd9Sstevel@tonic-gate dm.ndigits = ndigit; 151*7c478bd9Sstevel@tonic-gate single_to_decimal(number, &dm, &dr, &fef); 152*7c478bd9Sstevel@tonic-gate _gcvt(ndigit, &dr, trailing, buf); 153*7c478bd9Sstevel@tonic-gate return (buf); 154*7c478bd9Sstevel@tonic-gate } 155