hi all, i have the following problem using awk in a script
i want to read the values from a column with real numbers and calculate the mean.the problem is that when i use a statement such as this
num = $4
i cant find a way to convert the variable from string to floating point to perform... (7 Replies)
Hai,
Can you please guide me, to compare the floating point numbers.
Eg.
If
then
echo "value1 is grater "
fi
This code is not working properly when i excuted with floating values or real numbers (13 Replies)
Dear Unix Gurus,
I have a list of files that I want to loop over....for example:
sl40_z11.70.txt
sl41_z11.40.txt
sl42_z11.10.txt
sl43_z10.80.txt
using the script
#!/bin/sh
#
echo -n "....enter first Z-coordinate position....."; read zpos
q="scale=3; $zpos"
p=0.3
#... (7 Replies)
Hi All,
I'm trying to extract some floating point numbers from within some HTML code like this:
<TR><TD class='awrc'>Parse CPU to Parse Elapsd %:</TD><TD ALIGN='right' class='awrc'> 64.50</TD><TD class='awrc'>% Non-Parse CPU:</TD><TD ALIGN='right' class='awrc'> ... (2 Replies)
Hi,
i want to add two decimal values to
$ set a= 12.4
$ set b=3.6
$ w=`expr $a - $b`
expr: non-numeric argument
or is there any other method to do this mathematics operation.
i need to use this into my script. (4 Replies)
Hi guys
I have problem with my simple calculator, author of my book wrote
One way I tried is to test if one the inpur number is grater than zero, and then substatct
And my protptype function is
#include <stdio.h>
int main(void) {
float a, b , result;
... (11 Replies)
I have started using bash but this script which I am working on it, is in c chell. So here is my simple problem:
set x = 0.4124\0.234
echo $x
0.4124.0.234
Same operation in Bash gives me correct result in my terminal. So there is something with my c shell that is causing this behaviour.... (8 Replies)
I have the following code snippet in bash
if ]; then
minm=`echo "$diff" | bc`
fi
It works well for most of the cases. However lets say diff is -0.17 and minm is -0.0017. In such a case the comparison seems to fail. Is the correct way to compare a mixture of positive and... (12 Replies)
Discussion started by: ngabrani
12 Replies
LEARN ABOUT LINUX
ceil
CEIL(3) Linux Programmer's Manual CEIL(3)NAME
ceil, ceilf, ceill - ceiling function: smallest integral value not less than argument
SYNOPSIS
#include <math.h>
double ceil(double x);
float ceilf(float x);
long double ceill(long double x);
Link with -lm.
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
ceilf(), ceill():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;
or cc -std=c99
DESCRIPTION
These functions return the smallest integral value that is not less than x.
For example, ceil(0.5) is 1.0, and ceil(-0.5) is 0.0.
RETURN VALUE
These functions return the ceiling of x.
If x is integral, +0, -0, NaN, or infinite, x itself is returned.
ERRORS
No errors occur. POSIX.1-2001 documents a range error for overflows, but see NOTES.
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).)
The integral value returned by these functions may be too large to store in an integer type (int, long, etc.). To avoid an overflow, which
will produce undefined results, an application should perform a range check on the returned value before assigning it to an integer type.
SEE ALSO floor(3), lrint(3), nearbyint(3), rint(3), round(3), trunc(3)COLOPHON
This page is part of release 3.27 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/.
2010-09-20 CEIL(3)