Mail Archives: djgpp/1997/01/18/17:28:12
From: | awnbreel AT panix DOT com (Michael R Weholt)
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Newsgroups: | comp.os.msdos.djgpp
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Subject: | modulus operation with floats requires emulator?
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Date: | Sat, 18 Jan 97 19:18:28 GMT
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Organization: | Rookery Prawl
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Lines: | 31
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Message-ID: | <5br7o7$p2e@news1.panix.com>
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NNTP-Posting-Host: | mrw.dialup.access.net
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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I'm using Win95 on a pentium. Norton Utilities reports that
"Math Support is on chip".
When I try to use the modulus operation, I can only get it to
work using integers, not floats. When I try it with floats, the
debugger reports: "Error: invalid operands to binary %". I get this
message even when I try including math.h, or adding the -lm link
option.
Does this mean I have to get the 387 emulator and use it?
I'm just learning C, so I suppose I could have something wrong
with the source. The following gets the debug message described
above:
#include <stdio.h>
#include <math.h>
float mod;
main()
{
mod = 9.0 % 5.0;
(void) printf("modulus: %f\n", mod);
return(0);
}
Michael R Weholt
http://www.panix.com/~mrw/
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