simple_math.h

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/*
 * Functions and macros for simple math operations like min/max of two numbers.
 *
 *
 * Created by Michal Pitner on 13.06.2025.
 */
 
#ifndef SIMPLE_MATH_H
#define SIMPLE_MATH_H
 
#include "attributes.h"
#include "extra_types.h"
 

typedef enum {
    SIGN_NEG = -1,
    SIGN_POS = 1,
} sign_t;
 

#define sign_flipped( SIGN ) ( -( SIGN ) )
 

LibraryDefined Mathematical inline signed sgn_64( const int64_t n )
{
    return n == 0 ? 0 : n < 0 ? -1 : 1;
}

#define min_m( NUM_A, NUM_B ) ( ( NUM_A ) < ( NUM_B ) ? ( NUM_A ) : ( NUM_B ) )

#define max_m( NUM_A, NUM_B ) ( ( NUM_A ) > ( NUM_B ) ? ( NUM_A ) : ( NUM_B ) )
 
 
LibraryDefined Mathematical inline int64_t min_i64( const int64_t a, const int64_t b )
{
    return min_m( a, b );
}
LibraryDefined Mathematical inline uint64_t min_u64( const uint64_t a, const uint64_t b )
{
    return min_m( a, b );
}
 
LibraryDefined Mathematical inline int64_t max_i64( const int64_t a, const int64_t b )
{
    return max_m( a, b );
}
LibraryDefined Mathematical inline uint64_t max_u64( const uint64_t a, const uint64_t b )
{
    return max_m( a, b );
}
 

LibraryDefined Mathematical inline bool is_within( const int64_t low, const int64_t num,
                                                   const int64_t high )
{
    return num >= low && num <= high;
}

LibraryDefined Mathematical inline bool is_power_of_two( const uint64_t num )
{
    return num != 0 && !( num & ( num - 1 ) );
}
 
 
#endif //SIMPLE_MATH_H