Ideone.com

fork download

copy

#include <vector>
#include <algorithm>
#include <memory>
#include <iostream>
 
template<typename T>
T interpolate(uint16_t factor, const T& from, const T& to)
{
    return T(double(from) + double(factor) * (double(to) - double(from)) / double(0xFFFF));
}
 
template<typename T>
void test(const T& from, const T& to)
{
    for(uint16_t t = 0; t < 0xFFFF; t += 0xFFFF / 5)
    {
        const T& r = interpolate(t, from, to);
        std::cout << "interpolate(" << t << ", " << from << ", " << to << ") = " << r << "\n";
    }
 
    {
        const uint16_t t = 0xFFFF;
        const T& r = interpolate(t, from, to);
        std::cout << "interpolate(" << t << ", " << from << ", " << to << ") = " << r << "\n";
    }
}
 
template<typename T>
void test_lims()
{
    const T lowest = std::numeric_limits<T>::lowest();
    const T max = std::numeric_limits<T>::max();
    test(lowest, max);
    test(max, lowest);
}
 
int main()
{
    test(0, 10);
    test(-25, 33);
    test(1, 2);
    test(1, 1);
    test(1, 0);
    test(1, -1);
    test(-1, 1);
    test(-1, -1);
 
    test<int8_t>('0', '9');
    test<int8_t>('A', 'Z');
    test<uint8_t>('0', '9');
    test<uint8_t>('A', 'Z');
 
    test_lims<int16_t>();
    test_lims<uint16_t>();
    test_lims<int32_t>();
    test_lims<uint32_t>();
}

Success #stdin #stdout 0s 3416KB

stdin

copy

Standard input is empty

stdout

copy

interpolate(0, 0, 10) = 0
interpolate(13107, 0, 10) = 2
interpolate(26214, 0, 10) = 4
interpolate(39321, 0, 10) = 6
interpolate(52428, 0, 10) = 8
interpolate(65535, 0, 10) = 10
interpolate(0, -25, 33) = -25
interpolate(13107, -25, 33) = -13
interpolate(26214, -25, 33) = -1
interpolate(39321, -25, 33) = 9
interpolate(52428, -25, 33) = 21
interpolate(65535, -25, 33) = 33
interpolate(0, 1, 2) = 1
interpolate(13107, 1, 2) = 1
interpolate(26214, 1, 2) = 1
interpolate(39321, 1, 2) = 1
interpolate(52428, 1, 2) = 1
interpolate(65535, 1, 2) = 2
interpolate(0, 1, 1) = 1
interpolate(13107, 1, 1) = 1
interpolate(26214, 1, 1) = 1
interpolate(39321, 1, 1) = 1
interpolate(52428, 1, 1) = 1
interpolate(65535, 1, 1) = 1
interpolate(0, 1, 0) = 1
interpolate(13107, 1, 0) = 0
interpolate(26214, 1, 0) = 0
interpolate(39321, 1, 0) = 0
interpolate(52428, 1, 0) = 0
interpolate(65535, 1, 0) = 0
interpolate(0, 1, -1) = 1
interpolate(13107, 1, -1) = 0
interpolate(26214, 1, -1) = 0
interpolate(39321, 1, -1) = 0
interpolate(52428, 1, -1) = 0
interpolate(65535, 1, -1) = -1
interpolate(0, -1, 1) = -1
interpolate(13107, -1, 1) = 0
interpolate(26214, -1, 1) = 0
interpolate(39321, -1, 1) = 0
interpolate(52428, -1, 1) = 0
interpolate(65535, -1, 1) = 1
interpolate(0, -1, -1) = -1
interpolate(13107, -1, -1) = -1
interpolate(26214, -1, -1) = -1
interpolate(39321, -1, -1) = -1
interpolate(52428, -1, -1) = -1
interpolate(65535, -1, -1) = -1
interpolate(0, 0, 9) = 0
interpolate(13107, 0, 9) = 1
interpolate(26214, 0, 9) = 3
interpolate(39321, 0, 9) = 5
interpolate(52428, 0, 9) = 7
interpolate(65535, 0, 9) = 9
interpolate(0, A, Z) = A
interpolate(13107, A, Z) = F
interpolate(26214, A, Z) = K
interpolate(39321, A, Z) = P
interpolate(52428, A, Z) = U
interpolate(65535, A, Z) = Z
interpolate(0, 0, 9) = 0
interpolate(13107, 0, 9) = 1
interpolate(26214, 0, 9) = 3
interpolate(39321, 0, 9) = 5
interpolate(52428, 0, 9) = 7
interpolate(65535, 0, 9) = 9
interpolate(0, A, Z) = A
interpolate(13107, A, Z) = F
interpolate(26214, A, Z) = K
interpolate(39321, A, Z) = P
interpolate(52428, A, Z) = U
interpolate(65535, A, Z) = Z
interpolate(0, -32768, 32767) = -32768
interpolate(13107, -32768, 32767) = -19661
interpolate(26214, -32768, 32767) = -6554
interpolate(39321, -32768, 32767) = 6553
interpolate(52428, -32768, 32767) = 19660
interpolate(65535, -32768, 32767) = 32767
interpolate(0, 32767, -32768) = 32767
interpolate(13107, 32767, -32768) = 19660
interpolate(26214, 32767, -32768) = 6553
interpolate(39321, 32767, -32768) = -6554
interpolate(52428, 32767, -32768) = -19661
interpolate(65535, 32767, -32768) = -32768
interpolate(0, 0, 65535) = 0
interpolate(13107, 0, 65535) = 13107
interpolate(26214, 0, 65535) = 26214
interpolate(39321, 0, 65535) = 39321
interpolate(52428, 0, 65535) = 52428
interpolate(65535, 0, 65535) = 65535
interpolate(0, 65535, 0) = 65535
interpolate(13107, 65535, 0) = 52428
interpolate(26214, 65535, 0) = 39321
interpolate(39321, 65535, 0) = 26214
interpolate(52428, 65535, 0) = 13107
interpolate(65535, 65535, 0) = 0
interpolate(0, -2147483648, 2147483647) = -2147483648
interpolate(13107, -2147483648, 2147483647) = -1288490189
interpolate(26214, -2147483648, 2147483647) = -429496730
interpolate(39321, -2147483648, 2147483647) = 429496729
interpolate(52428, -2147483648, 2147483647) = 1288490188
interpolate(65535, -2147483648, 2147483647) = 2147483647
interpolate(0, 2147483647, -2147483648) = 2147483647
interpolate(13107, 2147483647, -2147483648) = 1288490188
interpolate(26214, 2147483647, -2147483648) = 429496729
interpolate(39321, 2147483647, -2147483648) = -429496730
interpolate(52428, 2147483647, -2147483648) = -1288490189
interpolate(65535, 2147483647, -2147483648) = -2147483648
interpolate(0, 0, 4294967295) = 0
interpolate(13107, 0, 4294967295) = 858993459
interpolate(26214, 0, 4294967295) = 1717986918
interpolate(39321, 0, 4294967295) = 2576980377
interpolate(52428, 0, 4294967295) = 3435973836
interpolate(65535, 0, 4294967295) = 4294967295
interpolate(0, 4294967295, 0) = 4294967295
interpolate(13107, 4294967295, 0) = 3435973836
interpolate(26214, 4294967295, 0) = 2576980377
interpolate(39321, 4294967295, 0) = 1717986918
interpolate(52428, 4294967295, 0) = 858993459
interpolate(65535, 4294967295, 0) = 0

Discover > Sphere Engine API

Discover > IDE Widget

Discover > Sphere Engine API

Discover > IDE Widget

Choose your language