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From: marty@wuphys.wustl.edu (Marty Olevitch)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: atof() problem in Turbo C 2.0
Message-ID: <1990Jun11.195944.26213@wuphys.wustl.edu>
Date: 11 Jun 90 19:59:44 GMT
Reply-To: marty@wuphys.UUCP (Marty Olevitch)
Organization: Physics Dept, Washington U. in St Louis
Lines: 35

Here is something I've just noticed in using the atof() library routine in
Turbo C 2.0. When the following test program is compiled with the "-DWEIRD"
option, the correct answer is printed. However, when "WEIRD" is not
#defined, the error message "scanf : floating point formats not linked" is
printed at runtime. Does the compilation of the sscanf() load in some other
code needed for atof()? If so, how do I get this code loaded without the
dummy call to sscanf() (which in the example is never executed).

Thanks,

Marty Olevitch				Internet: marty@wuphys.wustl.edu
Washington University			UUCP:     uunet!wugate!wuphys!marty
Physics Department, Campus Box 1105	Bitnet:   marty@wuphys.WUSTL
St Louis MO 63130 USA			Tel:      (314) 889-6285

/* atoftest */
#include <stdlib.h>

main()
{
	char s[10];
	double a;
	int yuck;

	sprintf(s," 1.00");

#ifdef WEIRD
	yuck = 0;
	if(yuck == 1)
		sscanf(s, "%f", &a);
#endif
	a = atof(s);
	printf("%f\n", a);

}