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 <sys/types.h>
2N/A#include "libc.h"
2N/A
2N/Achar *
2N/Afconvert(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 = fixed_form; /* F format. */
2N/A if (ndigits <= -DECIMAL_STRING_LENGTH)
2N/A ndigits = -DECIMAL_STRING_LENGTH + 1;
2N/A else if (ndigits >= DECIMAL_STRING_LENGTH)
2N/A ndigits = DECIMAL_STRING_LENGTH - 1;
2N/A dm.ndigits = ndigits; /* Number of digits after point. */
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 + dr.ndigits;
2N/A for (i = 0; i < dr.ndigits; i++)
2N/A buf[i] = dr.ds[i];
2N/A /*
2N/A * Pad with zeroes if we didn't get all the digits
2N/A * we asked for.
2N/A */
2N/A if (ndigits > 0 && dr.exponent > -ndigits) {
2N/A while (i < dr.ndigits + dr.exponent + ndigits)
2N/A buf[i++] = '0';
2N/A }
2N/A buf[i] = 0;
2N/A break;
2N/A case fp_zero:
2N/A *decpt = 0;
2N/A buf[0] = '0';
2N/A for (i = 1; i < ndigits; i++)
2N/A buf[i] = '0';
2N/A buf[i] = 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/Asfconvert(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 = fixed_form; /* F format. */
2N/A if (ndigits <= -DECIMAL_STRING_LENGTH)
2N/A ndigits = -DECIMAL_STRING_LENGTH + 1;
2N/A else if (ndigits >= DECIMAL_STRING_LENGTH)
2N/A ndigits = DECIMAL_STRING_LENGTH - 1;
2N/A dm.ndigits = ndigits; /* Number of digits after point. */
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 + dr.ndigits;
2N/A for (i = 0; i < dr.ndigits; i++)
2N/A buf[i] = dr.ds[i];
2N/A /*
2N/A * Pad with zeroes if we didn't get all the digits
2N/A * we asked for.
2N/A */
2N/A if (ndigits > 0 && dr.exponent > -ndigits) {
2N/A while (i < dr.ndigits + dr.exponent + ndigits)
2N/A buf[i++] = '0';
2N/A }
2N/A buf[i] = 0;
2N/A break;
2N/A case fp_zero:
2N/A *decpt = 0;
2N/A buf[0] = '0';
2N/A for (i = 1; i < ndigits; i++)
2N/A buf[i] = '0';
2N/A buf[i] = 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/Aqfconvert(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 = fixed_form; /* F format. */
2N/A if (ndigits <= -DECIMAL_STRING_LENGTH)
2N/A ndigits = -DECIMAL_STRING_LENGTH + 1;
2N/A else if (ndigits >= DECIMAL_STRING_LENGTH)
2N/A ndigits = DECIMAL_STRING_LENGTH - 1;
2N/A dm.ndigits = ndigits; /* Number of digits after point. */
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 if (ef & (1 << fp_overflow)) {
2N/A /*
2N/A * *_to_decimal raises overflow whenever dr.ds isn't large
2N/A * enough to hold all the digits requested. For float and
2N/A * double, this can only happen when the requested format
2N/A * would require trailing zeroes, in which case fconvert
2N/A * and sfconvert just add them. For long double, the arg-
2N/A * ument might be large enough that even the nonzero digits
2N/A * would overflow dr.ds, so we punt instead. (We could
2N/A * distinguish these two cases, but it doesn't seem worth
2N/A * changing things now, particularly since no real appli-
2N/A * cation prints floating point numbers to 500 digits.)
2N/A */
2N/A *decpt = 0;
2N/A buf[0] = 0;
2N/A return (buf);
2N/A }
2N/A switch (dr.fpclass) {
2N/A case fp_normal:
2N/A case fp_subnormal:
2N/A *decpt = dr.exponent + dr.ndigits;
2N/A for (i = 0; i < dr.ndigits; i++)
2N/A buf[i] = dr.ds[i];
2N/A buf[i] = 0;
2N/A break;
2N/A case fp_zero:
2N/A *decpt = 0;
2N/A buf[0] = '0';
2N/A for (i = 1; i < ndigits; i++)
2N/A buf[i] = '0';
2N/A buf[i] = 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}