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96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
#include <time.h>
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#include <conio.h>
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#include <ctype.h>
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/* Number of elements in the progress bar. Use a power of 2 to avoid the
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* multiplication (which is about to be tested).
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*/
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#define BAR_ELEMENTS 32U
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/* Screen coordinates for the progress meter */
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static unsigned char Width, Height;
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static unsigned char X, Y;
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static void ProgressMeter (unsigned Val)
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/* Print the progress bar */
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{
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cclearxy (X, Y, Width);
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gotoxy (X, Y);
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cprintf ("% 6lu/65536", (unsigned long) Val);
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}
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int main(void)
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{
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char C;
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/* Clock variable */
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clock_t Ticks;
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unsigned Sec;
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unsigned Milli;
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/* Actual test variables */
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register unsigned lhs = 0;
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register unsigned rhs = 0;
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register unsigned res;
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/* Clear the screen and output an informational message */
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clrscr ();
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screensize (&Width, &Height);
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cprintf ("This program does an exhaustive test of\r\n"
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"the multiplication routine. It runs\r\n"
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"several days, so please wait very\r\n"
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"patiently (or speedup your emulator)\r\n"
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"\r\n"
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"Progress:\r\n");
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/* Remember the current position for the progress bar */
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X = wherex ();
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Y = wherey ();
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/* Read the clock */
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Ticks = clock();
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do {
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/* Update the progress bar */
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ProgressMeter (lhs);
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/* Do one row of tests */
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res = 0;
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do {
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if (lhs * rhs != res) {
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gotoxy (X, Y+1);
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cprintf ("Error on %u * %u: %u != %u\r\n", lhs, rhs, lhs * rhs, res);
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cprintf ("Press a key ..., 'Q' to quit");
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C = toupper (cgetc ());
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cclearxy (X, Y+1, Width);
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cclearxy (X, Y+2, Width);
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if (C == 'Q') {
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goto Done;
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}
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}
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res += lhs;
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} while (++rhs != 0);
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} while (++lhs != 0);
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Done:
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/* Calculate the time used */
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Ticks = clock() - Ticks;
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Sec = (unsigned) (Ticks / CLOCKS_PER_SEC);
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Milli = ((Ticks % CLOCKS_PER_SEC) * 1000) / CLOCKS_PER_SEC;
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/* Print the time used */
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gotoxy (X, Y+1);
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cprintf ("Time used: %u.%03u seconds\n", Sec, Milli);
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return 0;
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}
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