/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
*
* The contents of this file are subject to the terms of either the GNU Lesser
* General Public License Version 2.1 only ("LGPL") or the Common Development and
* Distribution License ("CDDL")(collectively, the "License"). You may not use this
* file except in compliance with the License. You can obtain a copy of the CDDL at
* http://www.opensource.org/licenses/cddl1.php and a copy of the LGPLv2.1 at
* http://www.opensource.org/licenses/lgpl-license.php. See the License for the
* specific language governing permissions and limitations under the License. When
* distributing the software, include this License Header Notice in each file and
* include the full text of the License in the License file as well as the
* following notice:
*
* NOTICE PURSUANT TO SECTION 9 OF THE COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
* (CDDL)
* For Covered Software in this distribution, this License shall be governed by the
* laws of the State of California (excluding conflict-of-law provisions).
* Any litigation relating to this License shall be subject to the jurisdiction of
* the Federal Courts of the Northern District of California and the state courts
* of the State of California, with venue lying in Santa Clara County, California.
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or only
* the LGPL Version 2.1, indicate your decision by adding "[Contributor]" elects to
* include this software in this distribution under the [CDDL or LGPL Version 2.1]
* license." If you don't indicate a single choice of license, a recipient has the
* option to distribute your version of this file under either the CDDL or the LGPL
* Version 2.1, or to extend the choice of license to its licensees as provided
* above. However, if you add LGPL Version 2.1 code and therefore, elected the LGPL
* Version 2 license, then the option applies only if the new code is made subject
* to such option by the copyright holder.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_ASSERT_H
#include <assert.h>
#endif
#include "portability.h"
#include <stdlib.h>
TLongExpFloat::TLongExpFloat(double d)
{
if (d != 0.0 && d != -0.0) {
TDoubleAnatomy da(d);
m_exp = da.getExp();
da.clearExp();
m_base = da.getValue();
} else {
m_base = d;
m_exp = 0;
}
}
TLongExpFloat
TLongExpFloat::operator*(const TLongExpFloat& b) const
{
double d = this->m_base * b.m_base;
TLongExpFloat reda(d);
reda.m_exp += this->m_exp + b.m_exp;
return reda;
}
TLongExpFloat
TLongExpFloat::operator/(const TLongExpFloat& b) const
{
double d = this->m_base / b.m_base;
TLongExpFloat reda(d);
reda.m_exp += (this->m_exp - b.m_exp);
return reda;
}
bool
TLongExpFloat::operator<(const TLongExpFloat& b) const
{
if (m_base >= 0.0 && b.m_base >= 0.0) {
return(m_exp < b.m_exp || (m_exp == b.m_exp && m_base < b.m_base));
} else if (m_base < 0.0 && b.m_base < 0.0) {
return(m_exp > b.m_exp || (m_exp == b.m_exp && m_base < b.m_base));
} else if (m_base < 0.0 && b.m_base >= 0.0)
return true;
else
return false;
}
bool
TLongExpFloat::operator<=(const TLongExpFloat& b) const
{
if (m_base >= 0.0 && b.m_base >= 0.0) {
return(m_exp < b.m_exp || (m_exp == b.m_exp && m_base <= b.m_base));
} else if (m_base < 0.0 && b.m_base < 0.0) {
return(m_exp > b.m_exp || (m_exp == b.m_exp && m_base <= b.m_base));
} else if (m_base < 0.0 && b.m_base >= 0.0)
return true;
else
return false;
}
bool
TLongExpFloat::operator==(const TLongExpFloat& b) const
{
return(m_base == b.m_base && m_exp == b.m_exp);
}
void
TLongExpFloat::toString(std::string& str) const
{
char buf[256];
toString(buf);
str = buf;
}
#ifdef HAVE_ICONV_H
#include <iconv.h>
/**
* convert UTF-8 string pointed by s into UCS-4 Wide String at pwcs.
* No more than n wide char could be converted into target buffer.
* return -1 means error.
* other means the converted wide char number do not count the end 0.
*/
size_t
MBSTOWCS(TWCHAR *pwcs, const char* s, size_t n)
{
#ifndef WORDS_BIGENDIAN
static iconv_t ic = iconv_open("UCS-4LE", "UTF-8");
#else
static iconv_t ic = iconv_open("UCS-4BE", "UTF-8");
#endif
assert(ic != (iconv_t)-1);
// To eliminate the const char* and char* diffirence in differnt system
TIConvSrcPtr src = (TIConvSrcPtr)s;
size_t srclen = std::strlen(s) + 1;
char* dst = (char*)pwcs;
size_t dstlen = n * sizeof(TWCHAR);
size_t res = iconv(ic, &src, &srclen, &dst, &dstlen);
if (res != size_t(-1) && srclen == 0) {
n -= dstlen / sizeof(TWCHAR);
return (n > 0) ? (n - 1) : 0;
} else {
return size_t(-1);
}
}
/**
* convert UCS-4 string pointed by pwcs into UTF-8 String at s.
* No more than n byte could be converted into target buffer.
* return -1 means error.
* Other means the converted byte number do not count the end 0.
*/
size_t
WCSTOMBS(char* s, const TWCHAR* pwcs, size_t n)
{
#ifndef WORDS_BIGENDIAN
static iconv_t ic = iconv_open("UTF-8", "UCS-4LE");
#else
static iconv_t ic = iconv_open("UTF-8", "UCS-4BE");
#endif
assert(ic != (iconv_t)-1);
TIConvSrcPtr src = (TIConvSrcPtr)pwcs;
size_t srclen = (WCSLEN(pwcs) + 1) * sizeof(TWCHAR);
char* dst = (char*)s;
size_t dstlen = n;
size_t res = iconv(ic, &src, &srclen, &dst, &dstlen);
if (res != size_t(-1) && srclen == 0) {
n -= dstlen;
return (n > 0) ? (n - 1) : 0;
} else {
return size_t(-1);
}
}
#else // !HAVE_ICONV_H
size_t
MBSTOWCS(TWCHAR *pwcs, const char* s, size_t n)
{
const unsigned char *src = (const unsigned char*)s;
TWCHAR* dst = pwcs;
while (dst - pwcs < n) {
if (*src < 0xc0 || *src >= 0xfe) {
if (*src < 0x80) *dst++ = *src;
if (*src++ == 0) break;
continue;
}
for (int bytes = 2; bytes <= 6; bytes++) {
if ((*src & ~(0xff >> (bytes + 1))) !=
(((1 << bytes) - 1) << (8 - bytes))) continue;
if (bytes > 4) {
src += bytes;
} else {
*dst =
TWCHAR(*src++ & (0xff >> (bytes + 1))) << (6 * (bytes - 1));
for (; bytes-- > 1; src++) *dst |=
TWCHAR(*src & 0x3f) << (6 * (bytes - 1));
dst++;
}
break;
}
}
return(dst - pwcs);
}
size_t
WCSTOMBS(char* s, const TWCHAR* pwcs, size_t n)
{
char* dst = s;
while (dst - s < n) {
if (*pwcs < 0x80 || *pwcs > 0x10ffff) {
if (*pwcs < 0x80) *dst++ = *pwcs;
if (*pwcs++ == 0) break;
continue;
}
int bytes = *pwcs < 0x800 ? 2 : (*pwcs < 0xffff ? 3 : 4);
dst += bytes;
if (dst - s > n) return -1;
TWCHAR c = *pwcs++;
int nbyte = bytes;
char *tmp = dst - 1;
for (; nbyte > 0; c >>= 6, nbyte--)
*tmp-- =
(nbyte ==
1 ? (((1 << bytes) - 1) << (8 - bytes)) : 0x80) | (c & 0x3f);
}
return(dst - s);
}
#endif // HAVE_ICONV_H
/**
* return the wide string len at pwcs, not count the end 0.
*/
size_t
WCSLEN(const TWCHAR* pwcs)
{
size_t sz = 0;
if (pwcs) {
while (*pwcs++)
++sz;
}
return sz;
}
#if !defined (HAVE_STRNDUP)
extern "C" char *
strndup(const char *s, size_t n)
{
size_t nMost;
char *p = NULL;
if (!s)
return NULL;
#ifdef __cplusplus
nMost = std::min(strlen(s) + 1, n + 1);
#else
nMost = min(strlen(s) + 1, n + 1);
#endif
p = (char*)malloc(nMost);
memcpy(p, s, nMost);
p[nMost - 1] = '\0';
return p;
}
#endif //HAVE_STRNDUP
// -*- indent-tabs-mode: nil -*- vim:et:ts=4