08-24-2015
Hi Don...
Phew, that took some reading...
As 0^2 is 0, I never even considered it to be a perfect square so I stand corrected.
My error; however my code can very easily be changed to cater for it.
As you say it is slow, but it was coded from an observation not from any mathematical set of algorithms, that is, every _line_no_ is the perfect square of the odd number series...
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sqrtd64(3M) sqrtd64(3M)
NAME
sqrtd64(), sqrtd128(), sqrtd32() - decimal square root functions
SYNOPSIS
DESCRIPTION
returns the square root of x.
is a version of it takes a argument and returns a result.
is a version of it takes a argument and returns a result.
These math functions are supported for HP-UX 11i Version 3 September 2008 Update and forward.
USAGE
To use any of these functions, compile with the option.
Make sure your program defines and then includes
Link in the math library by specifying or on the linking command line.
For more information, see the at the following site:
RETURN VALUE
If x is +infinity, returns +infinity.
If x is less than 0, returns NaN and raises the invalid exception.
If x is NaN, returns NaN.
raises the inexact exception whenever a rounded result does not equal the mathematical result.
ERRORS
If x is less than 0, sets to
SEE ALSO
cbrtd64(3M), powd64(3M), math(5).
STANDARDS CONFORMANCE
These functions conform to ISO/IEC TR 24732, "Extension for the programming language C to support decimal floating-point arithmetic".
HP Integrity Server Only sqrtd64(3M)