2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A#include "lint.h"
2N/A#include "base_conversion.h"
2N/A#include <string.h>
2N/A#include <sys/types.h>
2N/A#include "libc.h"
2N/A
2N/A/*
2N/A * Copies the appropriate string for a datum of class cl into *buf,
2N/A * choosing "Inf" or "Infinity" according to ndigits, the desired
2N/A * output string length.
2N/A */
2N/Avoid
2N/A__infnanstring(enum fp_class_type cl, int ndigits, char *buf)
2N/A{
2N/A if (cl == fp_infinity) {
2N/A if (ndigits < 8)
2N/A (void) memcpy(buf, "Inf", 4);
2N/A else
2N/A (void) memcpy(buf, "Infinity", 9);
2N/A __inf_written = 1;
2N/A } else {
2N/A (void) memcpy(buf, "NaN", 4);
2N/A __nan_written = 1;
2N/A }
2N/A}
2N/A
2N/Achar *
2N/Aeconvert(double arg, int ndigits, int *decpt, int *sign, char *buf)
2N/A{
2N/A decimal_mode dm;
2N/A decimal_record dr;
2N/A fp_exception_field_type ef;
2N/A int i;
2N/A
2N/A#if defined(__sparc)
2N/A dm.rd = _QgetRD();
2N/A#elif defined(__i386) || defined(__amd64)
2N/A dm.rd = __xgetRD();
2N/A#else
2N/A#error Unknown architecture
2N/A#endif
2N/A dm.df = floating_form; /* E format. */
2N/A if (ndigits <= 0)
2N/A ndigits = 1;
2N/A else if (ndigits >= DECIMAL_STRING_LENGTH)
2N/A ndigits = DECIMAL_STRING_LENGTH - 1;
2N/A dm.ndigits = ndigits; /* Number of significant digits. */
2N/A double_to_decimal(&arg, &dm, &dr, &ef);
2N/A *sign = dr.sign;
2N/A switch (dr.fpclass) {
2N/A case fp_normal:
2N/A case fp_subnormal:
2N/A *decpt = dr.exponent + ndigits;
2N/A for (i = 0; i < ndigits; i++)
2N/A buf[i] = dr.ds[i];
2N/A buf[ndigits] = 0;
2N/A break;
2N/A case fp_zero:
2N/A *decpt = 1;
2N/A for (i = 0; i < ndigits; i++)
2N/A buf[i] = '0';
2N/A buf[ndigits] = 0;
2N/A break;
2N/A default:
2N/A *decpt = 0;
2N/A __infnanstring(dr.fpclass, ndigits, buf);
2N/A break;
2N/A }
2N/A return (buf);
2N/A}
2N/A
2N/Achar *
2N/Aseconvert(single *arg, int ndigits, int *decpt, int *sign, char *buf)
2N/A{
2N/A decimal_mode dm;
2N/A decimal_record dr;
2N/A fp_exception_field_type ef;
2N/A int i;
2N/A
2N/A#if defined(__sparc)
2N/A dm.rd = _QgetRD();
2N/A#elif defined(__i386) || defined(__amd64)
2N/A dm.rd = __xgetRD();
2N/A#else
2N/A#error Unknown architecture
2N/A#endif
2N/A dm.df = floating_form; /* E format. */
2N/A if (ndigits <= 0)
2N/A ndigits = 1;
2N/A else if (ndigits >= DECIMAL_STRING_LENGTH)
2N/A ndigits = DECIMAL_STRING_LENGTH - 1;
2N/A dm.ndigits = ndigits; /* Number of significant digits. */
2N/A single_to_decimal(arg, &dm, &dr, &ef);
2N/A *sign = dr.sign;
2N/A switch (dr.fpclass) {
2N/A case fp_normal:
2N/A case fp_subnormal:
2N/A *decpt = dr.exponent + ndigits;
2N/A for (i = 0; i < ndigits; i++)
2N/A buf[i] = dr.ds[i];
2N/A buf[ndigits] = 0;
2N/A break;
2N/A case fp_zero:
2N/A *decpt = 1;
2N/A for (i = 0; i < ndigits; i++)
2N/A buf[i] = '0';
2N/A buf[ndigits] = 0;
2N/A break;
2N/A default:
2N/A *decpt = 0;
2N/A __infnanstring(dr.fpclass, ndigits, buf);
2N/A break;
2N/A }
2N/A return (buf);
2N/A}
2N/A
2N/Achar *
2N/Aqeconvert(quadruple *arg, int ndigits, int *decpt, int *sign, char *buf)
2N/A{
2N/A decimal_mode dm;
2N/A decimal_record dr;
2N/A fp_exception_field_type ef;
2N/A int i;
2N/A
2N/A#if defined(__sparc)
2N/A dm.rd = _QgetRD();
2N/A#elif defined(__i386) || defined(__amd64)
2N/A dm.rd = __xgetRD();
2N/A#else
2N/A#error Unknown architecture
2N/A#endif
2N/A dm.df = floating_form; /* E format. */
2N/A if (ndigits <= 0)
2N/A ndigits = 1;
2N/A else if (ndigits >= DECIMAL_STRING_LENGTH)
2N/A ndigits = DECIMAL_STRING_LENGTH - 1;
2N/A dm.ndigits = ndigits; /* Number of significant digits. */
2N/A#if defined(__sparc)
2N/A quadruple_to_decimal(arg, &dm, &dr, &ef);
2N/A#elif defined(__i386) || defined(__amd64)
2N/A extended_to_decimal((extended *)arg, &dm, &dr, &ef);
2N/A#else
2N/A#error Unknown architecture
2N/A#endif
2N/A *sign = dr.sign;
2N/A switch (dr.fpclass) {
2N/A case fp_normal:
2N/A case fp_subnormal:
2N/A *decpt = dr.exponent + ndigits;
2N/A for (i = 0; i < ndigits; i++)
2N/A buf[i] = dr.ds[i];
2N/A buf[ndigits] = 0;
2N/A break;
2N/A case fp_zero:
2N/A *decpt = 1;
2N/A for (i = 0; i < ndigits; i++)
2N/A buf[i] = '0';
2N/A buf[ndigits] = 0;
2N/A break;
2N/A default:
2N/A *decpt = 0;
2N/A __infnanstring(dr.fpclass, ndigits, buf);
2N/A break;
2N/A }
2N/A return (buf);
2N/A}