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std.h
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Sun, Nov 10, 22:37

std.h
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/*
Copyright (C) 2014 Jerome Revaud
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 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, see <http://www.gnu.org/licenses/>
*/
#ifndef ___STD_H___
#define ___STD_H___
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <stdio.h>
//#include <time.h>
#define MIN(a,b) (((a)<(b)) ? (a) : (b))
#define MAX(a,b) (((a)>(b)) ? (a) : (b))
#define SWAP(a,b,type) {type _t = a; a = b; b = _t;}
#define between(min,val,max) (min<=val && val<=max)
#define NEWA(type,n) (type*)malloc(sizeof(type)*long(n))
#define NEWAC(type,n) (type*)calloc(sizeof(type),(n))
#define NEW(type) NEWA(type,1)
#define REALLOC(ptr,type,n) ptr = (type*)realloc(ptr, sizeof(type)*long(n))
/* debugging macros */
#define P(x) printf(#x " = %g\n",(double)(x));
#define D(x) P(x)
#define DA(x,nb) {int _iter; printf(#x " = {"); for(_iter=0; _iter<nb; _iter++) printf("%g,",(double)((x)[_iter])); puts("}");}
#define ASSERT(test,msg,p1) if(!(test)){fprintf(stderr," ---\n " msg "\n ---\n",p1); assert(0);}
#define EXIT(msg,p1) ASSERT(1,msg,p1)
static inline void memswap( void* a, void* b, unsigned int nbytes ) {
while(nbytes>=sizeof(double)) {
double tmp = *(double*)a;
*((double*&)a)++ = *(double*)b;
*((double*&)b)++ = tmp;
nbytes -= sizeof(double);
}
while(nbytes) {
char tmp = *(char*)a;
*((char*&)a)++ = *(char*)b;
*((char*&)b)++ = tmp;
nbytes--;
}
}
static inline float pow2( float f ) {
return f*f;
}
static inline bool ispowerof2( long n ) {
return (n & (n-1))==0;
}
const double INF = 1.0/0.0;
const double NaN = 0.0/0.0;
const int INTMIN = 0x80000000;
const int INTMAX = 0x7FFFFFFF;
const float FLOAT_MIN = -1e39; // converted to -inf
const float FLOAT_MAX = +1e39; // converted to +inf
inline float min_array_f(const float* a, int n) {
int i=n;
float res = FLOAT_MAX;
while(i--) if(a[i]<res) res=a[i];
return res;
}
inline float max_array_f(const float* a, int n) {
int i=n;
float res = FLOAT_MIN;
while(i--) if(a[i]>res) res=a[i];
return res;
}
// override printf because matlab can't use it as such
void std_printf(const char* fmt, ... );
void err_printf(const char* fmt, ... );
//#include <sys/time.h>
//inline double now()
//{
// struct timeval tv;
// gettimeofday (&tv,NULL);
// return (tv.tv_sec*1e3 +tv.tv_usec*1e-3)/1000;
//}
//#define tic {double t = now();
//#define toc t=now()-t; printf("elapsed time = %g ms\n",1000*t);}
#endif

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