关于tc中的“floating point formats not linked" or "floating point not loaded"
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Why did my program bomb at run time with 'floating point formats not linked' or 'floating point not loaded'?
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Date: 5 Feb 2002 22:03:03 -0400
These messages look similar but have very different causes.
"Floating point not loaded" is Microsoft C's run-time message when the
code requires a numeric coprocessor but your computer doesn't have one
installed. If the program is yours, relink it using the xLIBCE or xLIBCA
library (where x is the memory model).
"Floating point formats not linked" is a Borland run-time error (Borland
C or C++, Turbo C or C++). Borland's compilers try to be smart and not
link in the floating- point (f-p) library unless you need it. Alas, they
all get the decision wrong. One common case is where you don't call any
f-p functions, but you have %f or other f-p formats in scanf() or
printf() calls. The cure is to call an f-p function, or at least force
one to be present in the link.
To do that, define this function somewhere in a source file but don't
call it:
static void forcefloat(float *p)
{
float f = *p;
forcefloat(&f);
}
It doesn't have to be in the module with the main program, as long as
it's in a module that will be included in the link.
If you have Borland C++ 3.0, the README file documents a slightly less
ugly work-around. Insert these statements in your program:
extern unsigned _floatconvert;
#pragma extref _floatconvert
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