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Re: [CPROG] sqrt / math.h



Mads Bondo Dydensborg wrote:
> 
> On Tue, 1 Jan 2002, Zio wrote:
> 
> > sslug@sslug c]$ gcc -o sqrt_example sqrt_example.c
> 
> smid et "-lm" i enden af linien - du skal inkludere libm(ath).

Det sjove er, at skriver man:

$ gcc -O -o sqrt_example sqrt_example.c

går det også godt; optimeringen får compileren til at erstatte
sqrt kaldet med en inline sqrt opcode, og man sparer et funktionskald.

Mogens
-- 
Mogens Kjaer, Carlsberg Laboratory, Dept. of Chemistry
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: sslug@sslug Homepage: http://www.crc.dk


 
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