83Plus:BCALLs:4267

Synopsis

Official Name: DecO1Exp

BCALL Address: 4267

Decrements OP1's exponent.

Inputs

• OP1 = floating point number

Outputs

• OP1 's exponent decremented

Registers Destroyed

• A

Comments

This function decrements the exponent of OP1. Unlike FDiv10, checks are not performed to prevent an underflow.

Example

Suppose OP1=00h,80h,10h,00h,...
After B_CALL DecO1Exp, OP1=00h,7Fh,10h,00h,...


Suppose OP1=00h,00h,10h,00h,...
After B_CALL DecO1Exp, OP1=00h,FFh,10h,00h,...