FTWOTOX FTWOTOX
Operation:
2 Source $ FPn
Assembler
FTWOTOX.<fmt> <ea>,FPn
Syntax: FTVVOTOX.X FPm,FPn
FTWOTOX.X FPn
Attributes: Format= (Byte, Word, Long, Single, Double, Extended, Packed)
Description:
Converts the source operand to extended precision (if necessary) and cal-
culates two to the power of that number. Stores the result in the destination floating-
point data register.
Operation
Table:
e In Range
+
Result 2 x
Zero
infinity
-I- - + -
+1.0 +inf +O.O
NOTE: If the source operand is a NAN, refer to 4.5.4 NANs for more information.
Status
Register:
Condition Codes:
Quotient Byte:
Exception Byte:
Accrued Exception Byte:
Instruction Format:
15 14 13
1 1 1
0 R/M 0
Affected as described in 4.5.5.1 SETTING 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 <fret> 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
Compatibility
12 11 10 9 8 7 6 5 4 3 2 1 0
COPROCESSOR l EFFECTIVE ADDRESS
I tO I 0 0 0 MODE REGISTER
SOURCE DESTINATION I
SPECIFIER REGISTER 0 0 ] O 0 0 1
MC68881/MC68882 USER'S MANUAL
FREESCALE
4-123
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