Date: Fri, 5 Nov 2010 19:13:59 +0100 From: Polytropon <freebsd@edvax.de> To: Alejandro Imass <ait@p2ee.org> Cc: FreeBSD Mailing list <freebsd-questions@freebsd.org> Subject: Re: how to generate pi in c Message-ID: <20101105191359.2c047c29.freebsd@edvax.de> In-Reply-To: <AANLkTik62acvRKx71sQ%2Bwqd%2BKb=auqb_NQkxT9F6y-Yr@mail.gmail.com> References: <AANLkTikaBYi0d4dvLnc=vxuPDWQHDqrVJrz=iVkECeO=@mail.gmail.com> <AFAF0F44-48A3-462A-8EA5-005E838AE44E@elvandar.org> <AANLkTik62acvRKx71sQ%2Bwqd%2BKb=auqb_NQkxT9F6y-Yr@mail.gmail.com>
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On Fri, 5 Nov 2010 13:39:05 -0400, Alejandro Imass <ait@p2ee.org> wrote: > This is how I do it in perl > use constant PI => 4 * atan2(1, 1); > > In C it owuld probably be (using math.h): > > pi = 4.0*atan(1.0); Or use M_PI from /usr/include/math.h, as we already #include'd it. :-) #define M_PI 3.14159265358979323846 -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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