What's a good way to add a large number of small floats together?
- by splicer
Say you have 100000000 32-bit floating point values in an array, and each of these floats has a value between 0.0 and 1.0. If you tried to sum them all up like this
result = 0.0;
for (i = 0; i < 100000000; i++) {
result += array[i];
}
you'd run into problems as result gets much larger than 1.0.
So what are some of the ways to more accurately perform the summation?