ccore/include/core/Utility.h

#ifndef CORE_UTILITY_H
#define CORE_UTILITY_H

#include <string.h>

#include "core/Types.h"

size_t popCount(u64 u);
#define interpolate(a, b, factor) ((a) * (1.0f - (factor)) + (b) * (factor))
#define PI 3.14159265358979323846f
#define radianToDegree(radians) ((radians) * (180.0f / PI))
#define degreeToRadian(degrees) ((degrees) * (PI / 180.0f))

inline size_t maxSize(size_t a, size_t b) {
    return a > b ? a : b;
}

inline size_t minSize(size_t a, size_t b) {
    return a < b ? a : b;
}

typedef void (*ExitHandler)(int, void*);
[[noreturn]] void exitWithHandler(const char* file, int line, int value);
void setExitHandler(ExitHandler h, void* data);
#define EXIT(exitValue) exitWithHandler(__FILE__, __LINE__, exitValue)

typedef void (*OutOfMemoryHandler)(void*);
void setOutOfMemoryHandler(OutOfMemoryHandler h, void* data);

#ifdef CHECK_MEMORY
void* coreDebugAllocate(const char* file, int line, size_t n);
void* coreDebugReallocate(const char* file, int line, void* p, size_t n);
void coreFreeDebug(const char* file, int line, void* p);
void printMemoryReport(void);
#define coreAllocate(n) coreDebugAllocate(__FILE__, __LINE__, n)
#define coreReallocate(p, n) coreDebugReallocate(__FILE__, __LINE__, p, n)
#define coreFree(p) coreFreeDebug(__FILE__, __LINE__, p)
#else
void* coreAllocate(size_t n);
void* coreReallocate(void* p, size_t n);
void coreFree(void* p);
#define printMemoryReport()
#endif

bool sleepNanos(i64 nanos);
i64 getNanos(void);

// TODO: replace typeof with auto when available
#define swap(a, b)                                                             \
    do {                                                                       \
        typeof(a) aPointer = (a);                                              \
        typeof(b) bPointer = (b);                                              \
        typeof(*aPointer) tmp = *aPointer;                                     \
        *aPointer = *bPointer;                                                 \
        *bPointer = tmp;                                                       \
    } while(0)

#endif