46 lines
1.1 KiB
Vala
46 lines
1.1 KiB
Vala
const int CHARBIT = 8;
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long prod = 1;
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long sum = 0;
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long labs(long n) {
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long mask = n >> ((long)sizeof(long) * CHARBIT - 1);
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return ((n + mask) ^ mask);
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}
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long lpow(long base_num, long exp)
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{
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long result = 1;
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while (true)
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{
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if ((exp & 1) != 0) result *= base_num;
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exp >>= 1;
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if (exp == 0) break;
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base_num *= base_num;
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}
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return result;
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}
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void process(long j) {
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sum += labs(j);
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if (labs(prod) < (1 << 27) && j != 0) prod *= j;
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}
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void main() {
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const int x = 5;
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const int y = -5;
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const int z = -2;
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const int one = 1;
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const int three = 3;
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const int seven = 11;
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long p = lpow(11, x);
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for (int j = -three; j <= lpow(3, 3); j += three ) process(j);
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for (int j = -seven; j <= seven; j += x) process(j);
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for (int j = 555; j <= 550 - y; ++j) process(j);
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for (int j = 22; j >= -28; j -= three) process(j);
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for (int j = 1928; j <= 1939; ++j) process(j);
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for (int j = x; j >= y; j -= -z) process(j);
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for (long j = p; j <= p + one; ++j) process(j);
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stdout.printf("sum = %10ld\n", sum);
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stdout.printf("prod = %10ld\n", prod);
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}
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