be subtracted from ST(0), it can be transferred to the stack and used from there. The following code is suggested for subtracting the content of EAX from ST(0).

<pre><B>push  eax</B>  ;push the content of EAX on the stack
<B>fisub dword ptr[esp]</B> ;subtract the DWORD at memory address [esp] from ST(0)
<B>fxxxx</B>      ;another FPU instruction to insure that the subtraction
           ;is completed before removing the integer value from the stack
<B>pop   eax</B>  ;or pop any CPU register which can be tr