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/* Copyright (C) 2010-2016 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (retro_miscellaneous.h).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __RARCH_MISCELLANEOUS_H
#define __RARCH_MISCELLANEOUS_H
#include <stdint.h>
#include <math.h>
#if defined(__CELLOS_LV2__) && !defined(__PSL1GHT__)
#include <sys/timer.h>
#elif defined(XENON)
#include <time/time.h>
#elif defined(GEKKO) || defined(__PSL1GHT__) || defined(__QNX__)
#include <unistd.h>
#elif defined(PSP)
#include <pspthreadman.h>
#elif defined(VITA)
#include <psp2/kernel/threadmgr.h>
#elif defined(_3DS)
#include <3ds.h>
#else
#include <time.h>
#endif
#if defined(_WIN32) && !defined(_XBOX)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#elif defined(_WIN32) && defined(_XBOX)
#include <Xtl.h>
#endif
#include <limits.h>
#ifdef _MSC_VER
#include <compat/msvc.h>
#endif
#include <retro_inline.h>
#ifndef PATH_MAX_LENGTH
#if defined(_XBOX1) || defined(_3DS) || defined(PSP) || defined(GEKKO)
#define PATH_MAX_LENGTH 512
#else
#define PATH_MAX_LENGTH 4096
#endif
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846264338327
#endif
#ifndef MAX
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#endif
#ifndef MIN
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#define RARCH_SCALE_BASE 256
/**
* retro_sleep:
* @msec : amount in milliseconds to sleep
*
* Sleeps for a specified amount of milliseconds (@msec).
**/
static INLINE void retro_sleep(unsigned msec)
{
#if defined(__CELLOS_LV2__) && !defined(__PSL1GHT__)
sys_timer_usleep(1000 * msec);
#elif defined(PSP) || defined(VITA)
sceKernelDelayThread(1000 * msec);
#elif defined(_3DS)
svcSleepThread(1000000 * (s64)msec);
#elif defined(_WIN32)
Sleep(msec);
#elif defined(XENON)
udelay(1000 * msec);
#elif defined(GEKKO) || defined(__PSL1GHT__) || defined(__QNX__)
usleep(1000 * msec);
#else
struct timespec tv = {0};
tv.tv_sec = msec / 1000;
tv.tv_nsec = (msec % 1000) * 1000000;
nanosleep(&tv, NULL);
#endif
}
/**
* next_pow2:
* @v : initial value
*
* Get next power of 2 value based on initial value.
*
* Returns: next power of 2 value (derived from @v).
**/
static INLINE uint32_t next_pow2(uint32_t v)
{
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
return v;
}
/**
* prev_pow2:
* @v : initial value
*
* Get previous power of 2 value based on initial value.
*
* Returns: previous power of 2 value (derived from @v).
**/
static INLINE uint32_t prev_pow2(uint32_t v)
{
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
return v - (v >> 1);
}
/**
* db_to_gain:
* @db : Decibels.
*
* Converts decibels to voltage gain.
*
* Returns: voltage gain value.
**/
static INLINE float db_to_gain(float db)
{
return powf(10.0f, db / 20.0f);
}
/* Helper macros and struct to keep track of many booleans.
* To check for multiple bits, use &&, not &.
* For OR, | can be used. */
typedef struct
{
uint32_t data[8];
} retro_bits_t;
#define BIT_SET(a, bit) ((a)[(bit) >> 3] |= (1 << ((bit) & 7)))
#define BIT_CLEAR(a, bit) ((a)[(bit) >> 3] &= ~(1 << ((bit) & 7)))
#define BIT_GET(a, bit) ((a)[(bit) >> 3] & (1 << ((bit) & 7)))
#define BIT16_SET(a, bit) ((a) |= (1 << ((bit) & 15)))
#define BIT16_CLEAR(a, bit) ((a) &= ~(1 << ((bit) & 15)))
#define BIT16_GET(a, bit) (!!((a) & (1 << ((bit) & 15))))
#define BIT16_CLEAR_ALL(a) ((a) = 0)
#define BIT32_SET(a, bit) ((a) |= (1 << ((bit) & 31)))
#define BIT32_CLEAR(a, bit) ((a) &= ~(1 << ((bit) & 31)))
#define BIT32_GET(a, bit) (!!((a) & (1 << ((bit) & 31))))
#define BIT32_CLEAR_ALL(a) ((a) = 0)
#define BIT64_SET(a, bit) ((a) |= (UINT64_C(1) << ((bit) & 63)))
#define BIT64_CLEAR(a, bit) ((a) &= ~(UINT64_C(1) << ((bit) & 63)))
#define BIT64_GET(a, bit) (!!((a) & (UINT64_C(1) << ((bit) & 63))))
#define BIT64_CLEAR_ALL(a) ((a) = 0)
#define BIT128_SET(a, bit) ((a).data[(bit) >> 5] |= (1 << ((bit) & 31))
#define BIT128_CLEAR(a, bit) ((a).data[(bit) >> 5] &= ~(1 << ((bit) & 31)))
#define BIT128_GET(a, bit) ((a).data[(bit) >> 5] & (1 << ((bit) & 31)))
#define BIT128_CLEAR_ALL(a) memset(&(a), 0, sizeof(a));
#endif
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