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// This may look like C code, but it is really -*- C++ -*-
/*
Copyright (C) 1988, 1992 Free Software Foundation
written by Doug Lea (dl@rocky.oswego.edu)
This file is part of the GNU C++ Library. This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version. This library 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
arithmetic, etc. functions on built in types
*/
#ifndef _builtin_h
#ifdef __GNUG__
#pragma interface
#endif
#define _builtin_h 1
#include <stddef.h>
#include <std.h>
#include <cmath>
#ifndef __GNUC__
#define __attribute__(x)
#endif
typedef void (*one_arg_error_handler_t)(const char*);
typedef void (*two_arg_error_handler_t)(const char*, const char*);
long gcd(long, long);
long lg(unsigned long);
double pow(double, long);
long pow(long, long);
extern "C" double start_timer();
extern "C" double return_elapsed_time(double last_time = 0.0);
char* dtoa(double x, char cvt = 'g', int width = 0, int prec = 6);
unsigned int hashpjw(const char*);
unsigned int multiplicativehash(int);
unsigned int foldhash(double);
extern void default_one_arg_error_handler(const char*) __attribute__ ((noreturn));
extern void default_two_arg_error_handler(const char*, const char*) __attribute__ ((noreturn));
extern two_arg_error_handler_t lib_error_handler;
extern two_arg_error_handler_t
set_lib_error_handler(two_arg_error_handler_t f);
#if !defined(IV)
inline short abs(short arg)
{
return (arg < 0)? -arg : arg;
}
inline int sign(long arg)
{
return (arg == 0) ? 0 : ( (arg > 0) ? 1 : -1 );
}
inline int sign(double arg)
{
return (arg == 0.0) ? 0 : ( (arg > 0.0) ? 1 : -1 );
}
inline long sqr(long arg)
{
return arg * arg;
}
#if ! _G_MATH_H_INLINES /* hpux and SCO define this in math.h */
inline double sqr(double arg)
{
return arg * arg;
}
#endif
inline int even(long arg)
{
return !(arg & 1);
}
inline int odd(long arg)
{
return (arg & 1);
}
inline long lcm(long x, long y)
{
return x / gcd(x, y) * y;
}
inline void (setbit)(long& x, long b)
{
x |= (1 << b);
}
inline void clearbit(long& x, long b)
{
x &= ~(1 << b);
}
inline int testbit(long x, long b)
{
return ((x & (1 << b)) != 0);
}
#endif
#endif
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