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UNIX for Dummies Questions & Answers
sqrt in bash
Post 302490182 by pludi on Monday 24th of January 2011 06:58:11 AM
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Hi!
when i'm trying to compile this lite example
on my linux machine I'll get errors and i don't know why..
#include <stdio.h>
#include <math.h> /* needed by sqrt() */
int main()
{
printf("%f", sqrt(10.0));
return (0);
}
this is the error:
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: undefined reference to `sqrt'
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hi friends
can any body tell me how can i find sqrt of a any given number without using expr in bash shell
while i am doing i got some errors please take a look
and code is here
x=$((( ( sqrt($1) ) | bc )))
echo $x
$ sh quadratic-eqn-roots.sh 9
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This so basic that it should work.... Any ideas would be appreciared. Using a number directly in the sqrt allows it to compile.
primrose > cat a.c
#include <stdio.h>
#include <math.h>
int main(void)
{
double abcd=9;
printf("%f\n",sqrt(abcd));
}
primrose > gcc a.c
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Hi all...
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LEARN ABOUT DEBIAN
moose::meta::attribute::native::trait::number
Moose::Meta::Attribute::Native::Trait::Number(3pm) User Contributed Perl Documentation Moose::Meta::Attribute::Native::Trait::Number(3pm) NAME
Moose::Meta::Attribute::Native::Trait::Number - Helper trait for Num attributes VERSION
version 2.0603 SYNOPSIS
package Real; use Moose; has 'integer' => ( traits => ['Number'], is => 'ro', isa => 'Num', default => 5, handles => { set => 'set', add => 'add', sub => 'sub', mul => 'mul', div => 'div', mod => 'mod', abs => 'abs', }, ); my $real = Real->new(); $real->add(5); # same as $real->integer($real->integer + 5); $real->sub(2); # same as $real->integer($real->integer - 2); DESCRIPTION
This trait provides native delegation methods for numbers. All of the operations correspond to arithmetic operations like addition or multiplication. DEFAULT TYPE
If you don't provide an "isa" value for your attribute, it will default to "Num". PROVIDED METHODS
All of these methods modify the attribute's value in place. All methods return the new value. o add($value) Adds the current value of the attribute to $value. o sub($value) Subtracts $value from the current value of the attribute. o mul($value) Multiplies the current value of the attribute by $value. o div($value) Divides the current value of the attribute by $value. o mod($value) Returns the current value of the attribute modulo $value. o abs Sets the current value of the attribute to its absolute value. BUGS
See "BUGS" in Moose for details on reporting bugs. AUTHOR
Moose is maintained by the Moose Cabal, along with the help of many contributors. See "CABAL" in Moose and "CONTRIBUTORS" in Moose for details. COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Infinity Interactive, Inc.. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.14.2 2012-06-28 Moose::Meta::Attribute::Native::Trait::Number(3pm)