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Search: Posts Made By: Dr Sardonicus
Forum: Programming 2020-01-19, 14:04
Replies: 43
Views: 25,065
Posted By Dr Sardonicus
Hmm. "Platform specific" makes the "extract the...

Hmm. "Platform specific" makes the "extract the sign bit" approach sound unpromising.

I hereby invoke "Green's Law of Debate," that anything is possible if you don't know what you're talking...
Forum: Programming 2020-01-19, 02:40
Replies: 43
Views: 25,065
Posted By Dr Sardonicus
I am not qualified to assess the specific...

I am not qualified to assess the specific instructions you're using.

But assuming they can be made to work, then they do force the argument into the interval [0, pi/4] without using IF statements....
Forum: Programming 2020-01-18, 02:01
Replies: 43
Views: 25,065
Posted By Dr Sardonicus
I sent a PM to Ernst about this. He suggested I...

I sent a PM to Ernst about this. He suggested I post it to the thread, so here it is:


In the present case, the argument is guaranteed to be in [0, pi/2]. Obviously, you can obtain an argument...
Forum: Programming 2020-01-10, 01:43
Replies: 43
Views: 25,065
Posted By Dr Sardonicus
I dug up an old (1966) IBM System 360 manual here...

I dug up an old (1966) IBM System 360 manual here (http://www.bitsavers.org/pdf/ibm/360/model44/C28-6596-2_FortranIV_LibrarySubrs_1966.pdf). I thought of it because my dad programmed IBM 360's and...
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