utils.h

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#ifndef __UTILS_H
#define __UTILS_H

// Includes

#include <time.h>

// Defines

#define MAX(a,b) \
    ({ __typeof__ (a) _a = (a); \
        __typeof__ (b) _b = (b); \
        _a > _b ? _a : _b; })

#define MIN(a,b) \
    ({ __typeof__ (a) _a = (a); \
        __typeof__ (b) _b = (b); \
        _a < _b ? _a : _b; })

// Structures

// Function prototypes

size_t base64_encode_size(size_t binary_input);
size_t base64_decode_size(size_t base64_input);
void base64_encode_binary_to_base64(unsigned char const *input, size_t input_size, unsigned char *output, size_t *output_size);
void base64_decode_base64_to_binary(unsigned char const *input, size_t input_size, unsigned char *output, size_t *output_size);

uint32_t epoch_to_day_number(time_t epoch);
uint8_t epoch_to_time_interval_number(time_t epoch);

// Function definitions

#endif // __UTILS_H