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Subject:	Re: Fixed point arithmetic compilation
From:	"Timothy C Prince" <tprince AT myrealbox DOT com>
To:	ibiris AT genius DOT org DOT br
CC:	cygwin AT cygwin DOT com
Date:	Mon, 28 Apr 2003 17:48:48 +0000
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-----Original Message-----
From: ibiris AT genius DOT org DOT br
To: cygwin AT cygwin DOT com
Date: Mon, 28 Apr 2003 10:56:38 -0400
Subject: Fixed point arithmetic compilation

Greetings,

I would like to ask whether anyone knows of a way to impose fixed-point 
arithmetic instead of floating point when compiling with gcc under cygwin. 


My target is to profile an executable with and without floating point 
arithmetic. I noted that there is a soft-float option that can be passed 
targeting a 386 cpu, but during linking the linker cannot find the library 
that provides the floating point arithmetic functions needed. 

soft-float is not the same as fixed-point.  It's emulation of 386 floating point on a cpu without an fpu, far slower than fixed point, but far less user programming effort.

There's no built-in support for fixed point, and no point in doing so, since CPU's without floating point support aren't supported by any hardware which could run cygwin.

Tim Prince

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