Thanks, Rob, this was really bad choice, on my part, of example data, and I appreciate you pointed this out.

With real script, I'm observing smaller matrix population (non-zero elements count) after feeding 64-bit data in, than expected, when running with 5.32 PDL-SP (2.6 GSL), compared to correct count (population equals items fed in) running with 5.26 PDL-SP (2.3 GSL).

Then I tried to present exaggerated examples, and, yes, you are right, I messed operator precedence, and so result looks silly and not trustworthy.

There's still wrong output of "1 1" with:

die if gsl_spmatrix_set( $m, 1, 0, 1 );
say gsl_spmatrix_nnz( $m );
die if gsl_spmatrix_set( $m, 1 + (1 << 32), 0, 1 );
say gsl_spmatrix_nnz( $m );
[download]

or similar. I mean, my blunder doesn't cancel out Math::GSL (and perhaps GSL) issues.

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.