_8087

Syntax

#include <dos.h> extern int _8087;

Description

This variable is provided for compatibility with other DOS compilers. It contains 3 if a numeric coprocessor is installed, otherwise 0. If the environment variable 387 is set to either `y' or `n', the value of _8087 reflects the override (i.e., _8087 is unconditionally assigned the value 3 if 387 is set to `y', 0 if it is set to `n').

Portability

ANSI/ISO C	No
POSIX	No