C language_status87() function: obtain floating point processor status value

Function name : _status87

Header file : <float.h>

Function prototype : unsigned int _status87(void);

Function : Get floating point processor status value

Parameters : no parameters

Return value : Returns the floating point processor status value

program:

 #include<stdio.h>#include<float.h>intmain(){floatx;doubley=1.5e-100;printf(Status87beforeerror:%xn, _status87());//Output the current status x=y;//Force an error y=x;printf(Status87aftererror:%xn,_status87());//Output the current status return0;}

Running results:

 Status87beforeerror:0Status87aftererror:3