What is the difference between lroundf(), floor() and nearbyintf()?

c

Solution

See the manual pages (learn to Google for "man WHATEVER" when WHATEVER is a library function):

- `lroundf()` - round to nearest integer, away from zero

- `floor()` - largest integral value not greater than argument

- `nearbyintf()` - round to integral value in floating-point format

Problem

I am aware that the above mentioned are used to round off the float values and double values. But can someone please explain how each one rounds off the values? I couldn't find any documentation for this.

Original source