# floor(3) [freebsd man page]

```FLOOR(3)						   BSD Library Functions Manual 						  FLOOR(3)

NAME
floor, floorf, floorl -- largest integral value less than or equal to x

LIBRARY
Math Library (libm, -lm)

SYNOPSIS
#include <math.h>

double
floor(double x);

float
floorf(float x);

long double
floorl(long double x);

DESCRIPTION
The floor(), floorf() and floorl() functions return the largest integral value less than or equal to x, expressed as a floating-point number.

abs(3), ceil(3), fabs(3), ieee(3), math(3), rint(3), round(3), trunc(3)

STANDARDS
The floor() function conforms to ISO/IEC 9899:1990 (``ISO C90'').	The floorf() and floorl() functions conform to ISO/IEC 9899:1999
(``ISO C99'').

BSD								 January 13, 2005							       BSD```

## Check Out this Related Man Page

```floor(3M)						  Mathematical Library Functions						 floor(3M)

NAME
floor, floorf, floorl - floor function

SYNOPSIS
cc [ flag... ] file... -lm [ library... ]
#include <math.h>

double floor(double x);

float floorf(float x);

long double floorl(long double x);

DESCRIPTION
These functions compute the largest integral value not greater than x.

RETURN VALUES
Upon  successful  completion,  these  functions return the largest integral value not greater than x, expressed as a double, float, or long
double, as appropriate for the return type of the function.

If x is NaN, a NaN is returned.

If x is +-Inf or +-0, x is returned.

ATTRIBUTES
See attributes(5) for descriptions of the following attributes:

+-----------------------------+-----------------------------+
|      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
+-----------------------------+-----------------------------+
|Interface Stability	     |Standard			   |
+-----------------------------+-----------------------------+
|MT-Level		     |MT-Safe			   |
+-----------------------------+-----------------------------+

ceil(3M), feclearexcept(3M), fetestexcept(3M), isnan(3M), math.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    1 Sep 2002								 floor(3M)```
Man Page

## FLOOR Func

Hello Experts, Is there any inbuild FLOOR function to do FLOOR func in mathmetics in awk script like in FlOOR Func in C. Ex:- floor(2.9) = 2 floor(2.1) = 2 floor(2.0) = 2 floor(-2.0) = 2 floor(-2.1) = -3 floor(-2.9) =...

## CEILING and FLOOR functions

Hi all, Does anyone know how to simulate a ceiling or floor function in UNIX? OS is Solaris. I tried the suggestion from an old forum but it is giving me error as below: server01/tmp\$: echo "7.2" | awk '{printf("%d\n",\$0+=\$0<0?0:0.999)}' awk: syntax error near line 1 awk: illegal...

## Round floor behavior

Hello, My round and floor functions in C program behaves weird. Can someone help resolve the issue.. fprintf( fp, "ROUND TEST VARIABLE 11686776.000000 %d\n", round(11686776.000000)); fprintf( fp, "ROUND TEST VARIABLE 1168677.000000 %d\n", round(1168677.000000)); fprintf( fp, "FLOOR...