12-10-2007
Quote:
Originally Posted by
ahjiefreak
Hi ,
Do you mean using the same code that I described earlier on?
Please advise. Thanks.
-Jason
No, this 'code' will not work for multiple reasons.
What I mean (for starters) why cannot use awk's "sqrt" built-in function?
I guess I don't understand:
- what "t=sqrt($t)' | bc -l " is supposed to do
- what is the value of 'h' in "t= h*($3+$2);"
- What do think the value of $2 and $1 will be in the 'END' block
- what's the intent of this: count($1)=$2/t
- why are you doing this 'cat a.txt'
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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