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Top Forums Shell Programming and Scripting how can i find sqrt of a any number without using expr Post 302307520 by DeviousPete on Wednesday 15th of April 2009 03:11:41 PM
Old 04-15-2009
Thanks..... I was actually just looking for a simple solution to that!

Quote:
Originally Posted by ghostdog74
you can also use awk
Code:
printf "4" | awk '{print sqrt($0)}'

 

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SQRT(3) 						   BSD Library Functions Manual 						   SQRT(3)

NAME
cbrt, cbrtf, cbrtl, sqrt, sqrtf, sqrtl -- cube root and square root functions LIBRARY
Math Library (libm, -lm) SYNOPSIS
#include <math.h> double cbrt(double x); float cbrtf(float x); long double cbrtl(long double x); double sqrt(double x); float sqrtf(float x); long double sqrtl(long double x); DESCRIPTION
The cbrt(), cbrtf(), and cbrtl() functions compute the cube root of x. The sqrt(), sqrtf(), and sqrtl() functions compute the non-negative square root of x. RETURN VALUES
The cbrt(), cbrtf(), and cbrtl() functions return the requested cube root. The sqrt(), sqrtf(), and sqrtl() functions return the requested square root unless an error occurs. An attempt to take the sqrt() of negative x raises an invalid exception and causes an NaN to be returned (except that the square root of -0 is valid and equal to -0.) SEE ALSO
fenv(3), math(3) STANDARDS
The cbrt(), cbrtf(), cbrtl(), sqrt(), sqrtf(), and sqrtl() functions conform to ISO/IEC 9899:1999 (``ISO C99''). HISTORY
The cbrt() function appeared in 4.3BSD. The sqrtl() function appeared in FreeBSD 8.0. The cbrtl() function appeared in FreeBSD 9.0. BSD
March 5, 2011 BSD
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