#elisp
The functions ffloor, fceiling, fround, and ftruncate take a floating-point argument and return a floating-point result whose value is a nearby integer. ffloor returns the nearest integer below; fceiling, the nearest integer above; ftruncate, the nearest integer in the direction towards zero; fround, the nearest integer.
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GNU Emacs Lisp Reference Manual: Rounding Operations
GNU Emacs Lisp Reference Manual: Rounding Operations Next: Bitwise Operations, Previous: Arithmetic Operations, Up: Numbers [Contents][Index] 3.7 Rounding Operations The functions ffloor , fceiling , fround , and ftruncate take a floating-point argument and return a floating-point result whose value is a nearby integer. ffloor returns the nearest integer below; fceiling , the nearest integer above; ftruncate , the nearest integer in the direction towards zero; fround , the nearest integer. Function: ffloor float This function rounds float to the next lower integral value, and returns that value as a floating-point number. Function: fceiling float This function ro