math.h and lib for BoostC? - Electronic Circuits Projects Diagrams Free

futz · 31st March 2008, 02:44 AM

I keep needing things like abs().

Torben · 31st March 2008, 05:23 AM

Quote:

Originally Posted by futz

I keep needing things like abs().

Never tried BoostC but from what I find with Google (mostly old forum posts) it looks like it might be a roll-your-own situation. Or maybe you could copy some of the headers and libs from libc (do you have Linux?).

Code:

int abs(int n) {
    return n > 0 ? n : -n;
}

Torben

[Edit: You can browse the libc code here: http://sourceware.org/cgi-bin/cvsweb...?cvsroot=glibc ]

futz · 31st March 2008, 05:45 AM

Quote:

Originally Posted by Torben

Never tried BoostC but from what I find with Google (mostly old forum posts) it looks like it might be a roll-your-own situation.

I was starting to get that idea anyway, judging by the posts on SourceBoost's forums. Shouldn't be that hard to write one anyway.

It's been many many years since I built my own libs for C. I'll have to refresh my foggy old memory.

Quote:

Or maybe you could copy some of the headers and libs from libc (do you have Linux?).

Good idea. I have almost nothing but Linux. There's windoze on only a few of my too many computers.

futz · 31st March 2008, 06:29 AM

Quote:

Originally Posted by Torben

Code:

int abs(int n) {
    return n > 0 ? n : -n;
}

Thank you Torben for the abs()!

I should have known it would be that simple. My Bresenham line routine now works perfect. Building some nice demos for the site.

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31st March 2008, 02:44 AM	#1
futz	math.h and lib for BoostC? I keep needing things like abs(). __________________ ========================= Futz's Microcontrollers & Robotics =========================