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Full Discussion: FLOOR Func
Top Forums Shell Programming and Scripting FLOOR Func Post 302141001 by user_prady on Wednesday 17th of October 2007 06:16:52 AM
Old 10-17-2007
Quote:
Originally Posted by user_prady
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(-1.1) =-2
floor(-1.9) = -2
floor(-2.0) = -2
floor(-2.1) = -3
floor(-2.9) = -3

If there does not exist in awk script please help me some tricks to do it ...


Thanks in advance..
User_prady

GOT the answer

I made a func like below

function vint(y){
if (y < 0){
if(int(y) == y )
return int(y)
else
return int(y)-1
}
else
return int(y)
}

Thank you very much..

user_prady
This User Gave Thanks to user_prady For This Post:
 
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FLOOR(3)						     Linux Programmer's Manual							  FLOOR(3)

NAME
floor, floorf, floorl - largest integral value not greater than argument SYNOPSIS
#include <math.h> double floor(double x); float floorf(float x); long double floorl(long double x); Link with -lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)): floorf(), floorl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L; or cc -std=c99 DESCRIPTION
These functions return the largest integral value that is not greater than x. For example, floor(0.5) is 0.0, and floor(-0.5) is -1.0. RETURN VALUE
These functions return the floor of x. If x is integral, +0, -0, NaN, or an infinity, x itself is returned. ERRORS
No errors occur. POSIX.1-2001 documents a range error for overflows, but see NOTES. ATTRIBUTES
Multithreading (see pthreads(7)) The floor(), floorf(), and floorl() functions are thread-safe. CONFORMING TO
C99, POSIX.1-2001. The variant returning double also conforms to SVr4, 4.3BSD, C89. NOTES
SUSv2 and POSIX.1-2001 contain text about overflow (which might set errno to ERANGE, or raise an FE_OVERFLOW exception). In practice, the result cannot overflow on any current machine, so this error-handling stuff is just nonsense. (More precisely, overflow can happen only when the maximum value of the exponent is smaller than the number of mantissa bits. For the IEEE-754 standard 32-bit and 64-bit floating- point numbers the maximum value of the exponent is 128 (respectively, 1024), and the number of mantissa bits is 24 (respectively, 53).) SEE ALSO
ceil(3), lrint(3), nearbyint(3), rint(3), round(3), trunc(3) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2013-07-23 FLOOR(3)

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