Difference between revisions of "83Plus:BCALLs:4267"
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'''BCALL Address:''' 4267 | '''BCALL Address:''' 4267 | ||
| − | Decrements | + | Decrements [[83Plus:RAM:8478|OP1]]'s exponent. |
=== Inputs === | === Inputs === | ||
| − | * | + | * OP1 = floating point number |
=== Outputs === | === Outputs === | ||
| − | * | + | * OP1 's exponent decremented |
=== Registers Destroyed === | === Registers Destroyed === | ||
| Line 17: | Line 17: | ||
== Comments == | == Comments == | ||
| − | This function decrements the exponent of | + | This function decrements the exponent of OP1. Unlike [[83Plus:BCALLs:4264|FDiv10]], checks are not performed to prevent an underflow. |
== Example == | == Example == | ||
| − | Suppose | + | <nowiki>Suppose OP1=00h,80h,10h,00h,... |
| − | After B_CALL | + | After B_CALL DecO1Exp, OP1=00h,7Fh,10h,00h,... |
| − | Suppose | + | Suppose OP1=00h,00h,10h,00h,... |
| − | After B_CALL | + | After B_CALL DecO1Exp, OP1=00h,FFh,10h,00h,...</nowiki> |
Latest revision as of 07:56, 26 April 2005
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,...
