4
FETOX FETOX
ex
Operation:
Assembler
Syntax:
e(Source) J FPn
FETOX.<fmt> <ea>,FPn
FETOX.X FPm,FPn
FETOX.X FPn
Attributes:
Format =(Byte, Word, Long, Single, Double, Extended, Packed)
Description:
Converts the source operand to extended precision (if necessary) and cal-
culates e to the power of that number. Stores the result in the destination floating-
point data register.
Operation Table:
Source
Destination
In
Range
Result e x
Zero
+
+ 1.0
Infini-W
+
~- inf - 0.0
NOTE: If the source operand is a NAN, refer to 4.5.4 NANs for mere information.
Status Register:
Condition Codes:
Quotient Byte:
Exception Byte:
Accrued Exception Byte:
Instruction Format:
15 14 13
I 1 I
0 R/M (~
Affected as described in 4.5.5.1 SE'I-[ING FLOATING-POINT
, CONDITION
CODES
Not affected
BSUN
SNAN
OPERR
OVFL
UNFL
DZ
INEX2
INEX1
Cleared
Refer to 4.5.4 NANs.
Cleared
Refer to 6.1.4 Overflow.
Refer to 6.1.5 Underflow.
Cleared
Refer to 6.1.7 Inexact Result.
If <fmt> is Packed, refer to 6.1.8 Inexact Result
on Decimal
Input; cleared otherwise.
Affected as described in 6.1.10 IEEE Exception and Trap
Com-
patibility
12 , ,0 , 8 , 6 5 , 3 2 , c
COPROCESSOR I t EFFECT,V~ A~ORE~S
1 )0 0 O 0 MODE I F, EGISTER i
i
SPECIFIER REGISTER 0 0 l 0 ~ , 0 i 0 r
FREESCALE
4-42
MC68881/MC68882 USER'S MANUAL
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