关于tc中的“floating point formats not linked" or "floating point not loaded"

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最新推荐文章于 2021-05-19 16:42:28 发布

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分类专栏： C语言学习路上的积累文章标签： borland microsoft library module function float

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本文解析了程序运行时出现的“浮点数格式未链接”及“浮点数未加载”错误的原因，并提供了针对性解决方案。前者常见于Borland C/C++编译环境中，后者则出现在使用微软C编译器的环境下。

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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