Floating Point Instructions
5-142 M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL MOTOROLA
FTENTOX 10
x
FTENTOX
(MC6888X, M68040FPSP)
Operation: 10
Source
→ FPn
Assembler FTENTOX. < fmt > < ea > ,FPn
Syntax: FTENTOX.X FPm,FPn
FTENTOX.X FPn
Attributes: Format = (Byte, Word, Long, Single, Double, Extended, Packed)
Description: Converts the source operand to extended precision (if necessary) and
calculates 10 to the power of that number. Stores the result in the destination floating-
point data register.
Operation Table:
NOTE: If the source operand is a NAN, refer to 1.6.5 Not-A-Numbers for more information.
Floating-Point Status Register:
Condition Codes: Affected as described in 3.6.2 Conditional Testing.
Quotient Byte: Not affected.
Exception Byte: BSUN Cleared
SNAN Refer to 1.6.5 Not-A-Numbers.
OPERR Cleared
OVFL Refer to overflow in the appropriate user’s
manual.
UNFL Refer to underflow in the appropriate user’s
manual.
DZ Cleared
INEX2 Refer to inexact result in the appropriate
user’s manual.
INEX1 If < fmt > is packed, refer to the appropriate
user’s manual inexact result on decimal
input; cleared otherwise.
Accrued Exception Byte: Affected as described in IEEE exception and trap compati-
bility in the appropriate user’s manual.
DESTINATION SOURCE
+ In Range – + Zero – + Infinity –
Result 10
x
+ 1.0
+ inf + 0.0
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