Difference between revisions of "83Plus:BCALLs:4261"
From WikiTI
m (Capitalized and added links) |
|||
| Line 5: | Line 5: | ||
'''BCALL Address:''' 4261 | '''BCALL Address:''' 4261 | ||
| − | Performs a fast divide by 100 on | + | Performs a fast divide by 100 on [[83Plus:RAM:8478|OP1]]. |
=== Inputs === | === Inputs === | ||
| − | * | + | * [[83Plus:RAM:8478|OP1]] = floating point number |
=== Outputs === | === Outputs === | ||
| − | * | + | * [[83Plus:RAM:8478|OP1]] = OP1 / 100 |
=== Registers Destroyed === | === Registers Destroyed === | ||
| Line 17: | Line 17: | ||
== Comments == | == Comments == | ||
| − | This function divides | + | This function divides OP1 by 100. This is done by twice decrementing the exponent. Checks are performed to prevent an underflow. This is much faster than FPDiv when op2=100. |
== Example == | == Example == | ||
| − | Suppose | + | Suppose OP1=00h,80h,10h,00h,... |
| − | After B_CALL FDiv100, | + | After B_CALL FDiv100, OP1=00h,7Eh,10h,00h,... |
Revision as of 08:42, 8 April 2005
Synopsis
Official Name: FDiv100
BCALL Address: 4261
Performs a fast divide by 100 on OP1.
Inputs
- OP1 = floating point number
Outputs
- OP1 = OP1 / 100
Registers Destroyed
- A
Comments
This function divides OP1 by 100. This is done by twice decrementing the exponent. Checks are performed to prevent an underflow. This is much faster than FPDiv when op2=100.
Example
Suppose OP1=00h,80h,10h,00h,... After B_CALL FDiv100, OP1=00h,7Eh,10h,00h,...
