Motorola M68000 User Manual download pdf (Page 153)

Floating Point Instructions

5-142 M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL MOTOROLA

FTENTOX 10

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

+ 1.0

+ inf + 0.0

1 2 ... 148 149 150 151 152 153 154 155 156 157 158 ... 356 357

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Motorola M68000 User Manual Page 153