Author: Tom Kerrigan
Date: 00:27:24 01/14/00
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I just ran the program below with Visual C++ 5.0 and Windows 98. It runs for 10 seconds and counts how many times GetTickCount() changes. In 10 seconds, it changed 2001 times, indicating that it changes every 5 ms. This is fine and good, but it does not explain how I can get the following analysis, also using GetTickCount(): position 002 Position: 8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - - 0 1 Solution(s): Rxb2 ply time nodes score pv 1. 0.008 24 0.20 Ke6 2+ 0.013 156 0.70 Ke6 e4 2. 0.015 232 0.94 c3 bxc3 ... 3. 0.017 341 0.94 c3 bxc3 ... 4. 0.023 868 0.91 c3 bxc3 ... 5. 0.029 2024 0.92 c3 bxc3 ... 6. 0.050 5822 0.82 c3 bxc3 ... 7. 0.073 12050 0.93 c3 bxc3 ... -Tom /* begin GetTickCount() test program */ #include <stdio.h> #include <windows.h> void main() { int t, stop, old, ticks = 0; old = GetTickCount(); stop = old + 10000; for (;;) { t = GetTickCount(); if (t != old) { ++ticks; if (t > stop) break; old = t; } } printf("ticks: %d\n", ticks); getc(stdin); }
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