Integer Rundungsfehler vermeiden

[Jens (Gast)]

Wie vermeidet man sowas:

#include "stdint.h"
#include "stdio.h"
int main(void)
{
uint8_t A = 10;
uint8_t B = 2;
uint8_t n = 5;

int8_t steps = (B - A) / n;
int8_t pos = A;

printf( "From %d to %d (%d steps) in %d increments of %d\n", A, B, A-B, n, steps );

 while( n-- )
 {
  printf( "%d %d\n", n, pos );
  pos += steps;
 }

return 0;
}

From 10 to 2 (8 steps) in 5 increments of -1
4 10
3 9
2 8
1 7
0 6

[Falk B. (falk)]

Mit Festkommaarithmetik oder direkt dem Bresenhamalgorythmus.

MFG
Falk

[Jens (Gast)]

Danke: http://de.wikipedia.org/wiki/Bresenham-Algorithmus