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171 lines
3.9 KiB
C
171 lines
3.9 KiB
C
/* mul-test.c -- Test the multiplication operator. */
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#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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#if defined(__CBM__)
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static const unsigned char revers_bar[8] = {
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0, 0, 0, 0, 0, 1, 1, 1
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};
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static const unsigned char small_bar[8] = {
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' ', 0xa5, 0xb4, 0xb5, 0xa1, 0xb6, 0xaa, 0xa7
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};
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#elif defined(__ATARI__)
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#endif
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/* Screen co-ordinates 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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gotoxy (X, Y);
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cprintf (" %5lu/65536\r\n", (unsigned long) Val);
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revers (1);
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cclear (Val / (unsigned)(65536U / BAR_ELEMENTS));
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/* Commodore and Atari computers can show eight times greater precision. */
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#if defined(__CBM__)
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Val = (Val / (unsigned)(65536U / BAR_ELEMENTS / 8)) % 8;
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revers (revers_bar[Val]);
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cputc (small_bar[Val]);
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#elif defined(__ATARI__)
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#endif
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revers (0);
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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 variables */
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clock_t Ticks;
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clock_t Wait;
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unsigned Days;
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unsigned Hours;
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unsigned Minu;
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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 for\r\n"
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"several days; so, please wait very\r\n"
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"patiently (or, speed up your emulator).\r\n"
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"\n"
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"Progress: ");
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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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/* Mark the maximum limit of the bar. */
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revers (1);
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cputcxy (BAR_ELEMENTS, Y, ' ');
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cputcxy (BAR_ELEMENTS, Y + 1, ' ');
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revers (0);
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/* [Targets that have clock() will define CLOCKS_PER_SEC.] */
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#ifdef CLOCKS_PER_SEC
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/* Start timing the test. */
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Ticks = clock();
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#endif
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do {
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/* Update the progress bar */
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ProgressMeter (lhs);
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/* Enable this to test the progress-meter code.
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** (And, run emulators at their maximun speed.)
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*/
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#if 0
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continue;
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#endif
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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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#ifdef CLOCKS_PER_SEC
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Wait = clock ();
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#endif
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gotoxy (0, Y+3);
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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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cursor (1);
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C = toupper (cgetc ());
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cclearxy (0, Y+3, Width);
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cclearxy (0, Y+4, Width);
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#ifdef CLOCKS_PER_SEC
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/* Don't time the user's interaction. */
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Ticks += clock () - Wait;
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#endif
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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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if (kbhit () && toupper (cgetc ()) == 'Q') {
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goto Done;
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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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#ifdef CLOCKS_PER_SEC
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/* Calculate the time used */
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Ticks = clock() - Ticks;
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Milli = ((Ticks % CLOCKS_PER_SEC) * 1000) / CLOCKS_PER_SEC;
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Sec = (unsigned) (Ticks / CLOCKS_PER_SEC);
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Minu = Sec / 60;
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Hours = Minu / 60;
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Days = Hours / 24;
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Hours %= 24;
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Minu %= 60;
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Sec %= 60;
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/* Print the time used */
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gotoxy (0, Y+3);
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cprintf ("Time used:\r\n"
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" %u days,\r\n"
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" %u hours,\r\n"
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" %u minutes,\r\n"
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" %u.%03u seconds.\n", Days, Hours, Minu, Sec, Milli);
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#endif
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cprintf ("\rTap a key, to exit. ");
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cgetc();
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return 0;
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}
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