FLOOR(3M)FLOOR(3M)NAME
fabs, floor, ceil - absolute value, floor, ceiling functions
SYNOPSIS
#include <math.h>
double floor(x)
double x;
double ceil(x)
double x;
double fabs(x)
double(x);
DESCRIPTION
Fabs returns the absolute value |x|.
Floor returns the largest integer not greater than x.
Ceil returns the smallest integer not less than x.
SEE ALSO abs(3)FLOOR(3M)

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floor(3m)floor(3m)Name
floor, ffloor, fabs, ceil, ceil, trunc, ftrunc, fmod, rint - floor, absolute value, ceiling, truncation, floating point remainder and
round-to-nearest functions
Syntax
#include <math.h>
double floor(x)
double x;
float ffloor(x)
float x;
double ceil(x)
double x;
float fceil(x)
float x;
double trunc(x)
double x;
float ftrunc(x)
float x;
double fabs(x)
double x;
double fmod (x, y)
double x, y;
double rint(x)
double x;
Description
The and routines return the largest integer which is not greater than x for double and float data types, respectively.
The and routines return the smallest integer which is not less than x for double and float data types, respectively.
The and routines return the integer (represented as a floating-point number) of x with the fractional bits truncated for double and float
data types respectively.
The routine returns the absolute value |x|.
The routine returns the floating point remainder of the division of x by y: zero if y is zero or if x/y would overflow; otherwise the num-
ber f with the same sign as x, such that x = iy + f for some integer i, and |f| < |y|.
The routine returns the integer (represented as a double precision number) nearest x in the direction of the prevailing rounding mode.
In the default rounding mode, to nearest, is the integer nearest x with the additional stipulation that if |rint(x)-x|=1/2 then is even.
Other rounding modes can make act like or or round towards zero.
Another way to obtain an integer near x is to declare (in C)
double x; int k; k = x;
The C compiler rounds x towards 0 to get the integer k. Also note that, if x is larger than k can accommodate, the value of k and the
presence or absence of an integer overflow are hard to predict.
The routine is in libc.a rather than libm.a.
See Alsoabs(3), ieee(3m), math(3m)
RISC floor(3m)

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) =... (1 Reply)

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... (3 Replies)

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... (3 Replies)