ATAN2 ?

WolfgangS · Post by **WolfgangS** » Sun Sep 14, 2003 12:57 am

Hi !
Is it possible to integrate an ATan2 function ?

MFG
WolfgangS

Post by **Fred** » Mon Sep 15, 2003 1:24 pm

WolfgangS · Post by **WolfgangS** » Sun Oct 05, 2003 8:58 am

Fred wrote:Yes.

And would you implement it in the next version ?

MFG
WolfgangS

Post by **Fred** » Sun Oct 05, 2003 10:54 am

It willn't be done for the next version.

Road Runner · Post by **Road Runner** » Thu Oct 16, 2003 12:11 pm

Just use ASM. The FPU already does ATAN.
I don't know the syntax required for PureBasic in-line ASM but I'm sure someone will show you how to make it work..

Code: Select all

fld y      ;Get y onto the FPU stack 
fld x      ;Get x onto the FPU stack  
fpatan     ;Get the ATAN(y/x), Put result in ST(1) then pop the stack  
fstp res   ;store the result in res and pop the stack

Post by **Polo** » Tue Nov 22, 2005 6:52 pm

Fred wrote:It willn't be done for the next version.

It's been 2 years now

va!n · Post by **va!n** » Tue Nov 22, 2005 7:46 pm

Polo wrote:
Fred wrote:It willn't be done for the next version.
It's been 2 years now

El_Choni · Post by **El_Choni** » Tue Nov 22, 2005 7:54 pm

Shouldn't it be enough to do Atan(y/x)?

Psychophanta · Post by **Psychophanta** » Tue Nov 22, 2005 8:20 pm

Yes, no needed more than the basic math functions, else PB would be full of it (Cosh(), Sinh(), Tanh(), Atan2(), ln(), etc.), and that should be too much ugly for a PURE language.

If PB 4 allow macros you can do all those functions in ASM (or get it from this forum) and save it in a good place for your programs.

EDIT: I'm dying to work with macros to build my own module sources.
BTW, ElChoni, are you Tailbite Expert? Shouldn't be better to write Tailbite author?

Post by **Polo** » Tue Nov 22, 2005 8:45 pm

Sorry, but Atan2 is different than atan(y/x), because atan2 should include some checks.

va!n · Post by **va!n** » Tue Nov 22, 2005 10:08 pm

why not adding it as keyword when its just only some asm lines? i dont need such a command yet but even blitz basic has inbuild Tan2 support... (looking forward...)

[Edit:]
same for Pi() , Sgn() , MOD, NOT, XOR