dividing

[Richard]

Dear Friends

I want to code an alogorithm to detect multiples of say 8 from a variable
i.e

8/8 =1 it has occured once
9/8=1.125
10/8=1.25
etc.......
etc.....
16/8 = it has occured twice

Can anyone tell me how I would detect if there was no remainder
i.e an exact multiple of 8.

Can you please give me an example!!

[.C]

try this:

#define true 1
int Test;
short int multiple;

Test =64;

if ( ! (Test % 8) ) multiple=true;

[Ttelmah]

[Birdie]

There is another option that gives all the information regarding the result of the test, both quotient and remainder (if you need it):

ldiv_t test;

signed long test_value;
long times_occurred;

test_value = 64;
test = ldiv(test_value,8);

if(test.rem == 0)
times_occurred = test.quot;

This ldiv function is also good for shrinking code size when using printf() with a float value. As a substitute:

ldiv_t tempory;
float PrintValue;

PrintValue = 347.8;
PrintValue *= 10;
tempory = ldiv((signed long)PrintValue,10);
printf(lcd_putc,"%ld.%1ld",tempory.quot,tempory.rem);