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/*
* Copyright (c) 1999-2010 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
* General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
# include "config.h"
# include "compiler.h"
# include "verireal.h"
# include "verinum.h"
# include <cstdlib>
# include <cctype>
# include <iostream>
# include <cmath>
# include <cassert>
# include <cstring>
verireal::verireal()
{
value_ = 0.0;
}
verireal::verireal(const char*txt)
{
char*tmp = new char[strlen(txt)+1];
char*cp = tmp;
for (unsigned idx = 0 ; txt[idx] ; idx += 1) {
if (txt[idx] == '_')
continue;
*cp++ = txt[idx];
}
cp[0] = 0;
value_ = strtod(tmp, 0);
delete[]tmp;
}
verireal::verireal(long val)
{
value_ = (double)val;
}
verireal::verireal(double val)
{
value_ = val;
}
verireal::~verireal()
{
}
long verireal::as_long(int shift) const
{
double out = value_ * pow(10.0,shift);
double outf;
if (out >= 0.0) {
outf = floor(out);
if (out >= (outf + 0.5))
outf += 1.0;
} else {
outf = ceil(out);
if (out <= (outf - 0.5))
outf -= 1.0;
}
return (long) outf;
}
int64_t verireal::as_long64(int shift) const
{
double out = value_ * pow(10.0,shift);
double outf;
if (out >= 0.0) {
outf = floor(out);
if (out >= (outf + 0.5))
outf += 1.0;
} else {
outf = ceil(out);
if (out <= (outf - 0.5))
outf -= 1.0;
}
return (int64_t) outf;
}
double verireal::as_double() const
{
return value_;
}
verireal operator+ (const verireal&l, const verireal&r)
{
verireal res;
res.value_ = l.value_ + r.value_;
return res;
}
verireal operator- (const verireal&l, const verireal&r)
{
verireal res;
res.value_ = l.value_ - r.value_;
return res;
}
verireal operator* (const verireal&l, const verireal&r)
{
verireal res;
res.value_ = l.value_ * r.value_;
return res;
}
verireal operator/ (const verireal&l, const verireal&r)
{
verireal res;
res.value_ = l.value_ / r.value_;
return res;
}
verireal operator/ (const verireal&l, const verinum&r)
{
verireal res;
res.value_ = l.value_ / (double)r.as_long();
return res;
}
verireal operator% (const verireal&l, const verireal&r)
{
verireal res;
// Modulus of a real value is not supported by the standard,
// but we support it as an extension. Assert that we are in
// the correct state before doing the operation.
assert(gn_icarus_misc_flag);
res.value_ = fmod(l.value_, r.value_);
return res;
}
verireal operator% (const verireal&l, const verinum&r)
{
verireal res;
// See above.
assert(gn_icarus_misc_flag);
res.value_ = fmod(l.value_, (double)r.as_long());
return res;
}
verireal pow (const verireal&l, const verireal&r)
{
verireal res;
res.value_ = pow(l.value_, r.value_);
return res;
}
verireal operator- (const verireal&l)
{
verireal res;
res.value_ = - l.value_;
return res;
}
ostream& operator<< (ostream&out, const verireal&v)
{
out << showpoint << v.value_;
return out;
}
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