Rounding off to the ceiling or floor value in R Programming - trunc() Function

Last Updated : 15 Jul, 2025
trunc() function in R Language is used to return the largest integer that is smaller than or equal to x (i.e : rounds downs the nearest integer). trunc() function behaves as a ceiling function for negative number and floor function for positive number.
Syntax: trunc(x) Parameter: x: Numeric value to be rounded off
Example 1: Python3 
# R program to calculate trunc value 
  
# Using trunc() method 
answer1 <- trunc(3.4) 
answer2 <- trunc(-3.4) 
answer3 <- trunc(3.6) 
answer4 <- trunc(-3.6) 

print(answer1) 
print(answer2) 
print(answer3) 
print(answer4)
Output: 
3
-3
3
-3
Example 2: Python3 
# R program to calculate trunc value 
  
# Using trunc() method 
answer1 <- trunc(c(1.5, 2.6, -3, -3.4)) 

print(answer1)
Output: 
1  2 -3 -3
Comment
Article Tags:
R Language
R Math-Function

Explore