forked from mirrors/0ad
janwas
122 lines
2.1 KiB
C
Executable File
122 lines
2.1 KiB
C
Executable File
// miscellany
|
|
//
|
|
// Copyright (c) 2003 Jan Wassenberg
|
|
//
|
|
// 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 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.
|
|
//
|
|
// Contact info:
|
|
// Jan.Wassenberg@stud.uni-karlsruhe.de
|
|
// http://www.stud.uni-karlsruhe.de/~urkt/
|
|
|
|
#ifndef __MISC_H__
|
|
#define __MISC_H__
|
|
|
|
#include "types.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
#define UNUSED(param) (void)param;
|
|
|
|
#define ONCE(code) { static bool done; if(!done) { code; }; done = true; }
|
|
|
|
|
|
const u32 KB = 1 << 10;
|
|
const u32 MB = 1 << 20;
|
|
|
|
|
|
#ifdef _WIN32
|
|
#define DIR_SEP '\\'
|
|
#else
|
|
#define DIR_SEP '/'
|
|
#endif
|
|
|
|
|
|
#ifndef _MCW_PC
|
|
#define _MCW_PC 0x0300 // Precision Control
|
|
#endif
|
|
#ifndef _PC_24
|
|
#define _PC_24 0x0000 // 24 bits
|
|
#endif
|
|
|
|
extern uint _control87(uint new_cw, uint mask);
|
|
|
|
|
|
extern u32 fnv_hash(const char* str, int len);
|
|
|
|
#define snprintf _snprintf
|
|
#define vsnprintf _vsnprintf
|
|
|
|
#define BIT(n) (1ul << (n))
|
|
|
|
#ifndef min
|
|
inline int min(int a, int b)
|
|
{
|
|
return (a < b)? a : b;
|
|
}
|
|
|
|
inline int max(int a, int b)
|
|
{
|
|
return (a > b)? a : b;
|
|
}
|
|
#endif
|
|
|
|
|
|
extern u16 bswap16(u16);
|
|
extern u32 bswap32(u32);
|
|
|
|
|
|
static inline u16 read_le16(const void* p)
|
|
{
|
|
#ifdef BIG_ENDIAN
|
|
const u8* _p = p;
|
|
return (u16)_p[0] | (u16)_p[1] << 8;
|
|
#else
|
|
return *(u16*)p;
|
|
#endif
|
|
}
|
|
|
|
|
|
static inline u32 read_le32(const void* p)
|
|
{
|
|
#ifdef BIG_ENDIAN
|
|
u32 t = 0;
|
|
for(int i = 0; i < 32; i += 8)
|
|
t |= (*(const u8*)p++) << i;
|
|
|
|
return t;
|
|
#else
|
|
return *(u32*)p;
|
|
#endif
|
|
}
|
|
|
|
|
|
extern bool is_pow2(int n);
|
|
|
|
|
|
// return -1 if not an integral power of 2,
|
|
// otherwise the base2 logarithm
|
|
extern int log2(const int n);
|
|
|
|
|
|
extern long round_up(long val, int multiple);
|
|
|
|
extern double ceil(double f);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // #ifndef __MISC_H__
|