forked from ulysses4ever/cs211-extra-task-1
/
extra-task-1.cpp
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extra-task-1.cpp
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#include <cassert>
#include <cmath>
#include <cfloat>
double seconds_difference(double time_1, double time_2)
{
return time_2 - time_1;
}
double hours_difference(double time_1, double time_2)
{
return seconds_difference(time_1, time_2) / 3600;
}
double to_float_hours(int hours, int minutes, int seconds)
{
return hours + minutes / 60.0 + seconds / 3600.0;
}
double to_24_hour_clock(double hours)
{
return hours - ((int)hours / 24) * 24;
}
double get_hours (double sec)
{
return (int)sec / 3600;
}
double get_minutes (double sec)
{
return (int)sec / 60 % 60;
}
double get_seconds (double sec)
{
return (int)sec % 60;
}
double time_to_utc(int utc_offset, double time)
{
return fmod((24 + time - utc_offset), 24);
}
double time_from_utc(int utc_offset, double time)
{
return fmod((24 + time + utc_offset), 24);
}
int main()
{
assert(fabs(seconds_difference(1800.0, 3600.0) - 1800.0) < DBL_EPSILON);
assert(fabs(seconds_difference(3600.0, 1800.0) - -1800.0) < DBL_EPSILON );
assert(fabs(seconds_difference(1800.0, 2160.0) - 360.0) < DBL_EPSILON);
assert(fabs(seconds_difference(1800.0, 1800.0) - 0.00) < DBL_EPSILON);
assert(fabs(hours_difference(1800.0, 3600.0) - 0.5) < DBL_EPSILON);
assert(fabs(hours_difference(3600.0, 1800.0) - -0.5) < DBL_EPSILON);
assert(fabs(hours_difference(1800.0, 2160.0) - 0.1) < DBL_EPSILON);
assert(fabs(hours_difference(1800.0, 1800.0) - 0.0) < DBL_EPSILON);
assert(fabs(to_float_hours(0, 15, 0) - 0.25) < DBL_EPSILON);
assert(fabs(to_float_hours(2, 45, 9) - 2.7525) < DBL_EPSILON);
assert(fabs(to_float_hours(1, 0, 36) - 1.01) < DBL_EPSILON);
assert(fabs(to_24_hour_clock(24) - 0) < DBL_EPSILON);
assert(fabs(to_24_hour_clock(48) - 0) < DBL_EPSILON);
assert(fabs(to_24_hour_clock(25) - 1) < DBL_EPSILON);
assert(fabs(to_24_hour_clock(4) - 4) < DBL_EPSILON);
assert(fabs(to_24_hour_clock(28.5) - 4.5) < DBL_EPSILON);
assert(fabs(get_hours(3800) - 1) < DBL_EPSILON);
assert(fabs(get_minutes(3800) - 3) < DBL_EPSILON);
assert(fabs(get_seconds(3800) - 20) < DBL_EPSILON);
assert(fabs(time_to_utc(+0, 12.0) - 12.0) < DBL_EPSILON);
assert(fabs(time_to_utc(+1, 12.0) - 11.0) < DBL_EPSILON);
assert(fabs(time_to_utc(-1, 12.0) - 13.0) < DBL_EPSILON);
assert(fabs(time_to_utc(-11, 18.0) - 5.0) < DBL_EPSILON);
assert(fabs(time_to_utc(-1, 0.0) - 1.0) < DBL_EPSILON);
assert(fabs(time_to_utc(-1, 23.0) - 0.0) < DBL_EPSILON);
assert(fabs(time_from_utc(+0, 12.0) - 12.0) < DBL_EPSILON);
assert(fabs(time_from_utc(+1, 12.0) - 13.0) < DBL_EPSILON);
assert(fabs(time_from_utc(-1, 12.0) - 11.0) < DBL_EPSILON);
assert(fabs(time_from_utc(+6, 6.0) - 12.0) < DBL_EPSILON);
assert(fabs(time_from_utc(-7, 6.0) - 23.0) < DBL_EPSILON);
assert(fabs(time_from_utc(-1, 0.0) - 23.0) < DBL_EPSILON);
assert(fabs(time_from_utc(-1, 23.0) - 22.0) < DBL_EPSILON);
assert(fabs(time_from_utc(+1, 23.0) - 0.0) < DBL_EPSILON);
return 0;
}