Справочник Пользователя для Mitsubishi Electronics QCPU

7-283

POW(P)

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7

.12 Special function

 instructions

7

.12.17 Exponentiation

 operation on 

floating-

poi
nt d

ata (Single pr

ecision) (

P

OW(P)

)

Exponentiation operation on floating-point data 

(Single precision) (POW(P))

POW(P)

*1: Available only for real number

Function

(1) This instruction raises the 32-bit floating-point data type real number specified by 

 to the 

number nth specified by 

 power, and then stores the operation result into the device 

specified by 

.

(2) The following shows the values to be specified by and stored into 

 or 

.

0, 2

-126

 | Set values (Storage values) | < 2

128

(3) If the value resulted from the operation is  0 or an underflow occurs, the result will be 

processed as 0.

QnU(D)(H)CPU: The serial number (first five digits) is "10102" or later.
QnUDE(H)CPU: The serial number (first five digits) is "10102" or later.

: Exponentiation recipient data or head number of the devices where the exponentiation recipient data are 

stored (real number)

: Exponentiation data or head number of the devices where the data are stored (real number)

: Head number of the devices where the operation result will be stored (real number)

Setting 

Data

Internal Devices 

R, ZR

J

\

U

\G

Zn

Constants

E

Other

Bit

Word

Bit

Word

––

––

 *1

––

––

––

 *1

––

––

––

––

Basic

Process

High

performance

Redundant

Command

Command

POW

POWP

S1

S2

D

S1

S2

D

POW

POWP

S1

S2

D

S1

S2

D

S1

S2

D

32-bit floating-point
data type real number

32-bit floating-point
data type real number

＋1

＋1

＋1

＋1

×

＋1

＋1

to

th power.

The instruction raises

×

Exponentiation recipient data

Exponentiation data

………

＋1

×

＋1

×

＋1

D

D

S1

S2

S1

S2

S1

S1

S2

S1

S2

S1

S1

S1

S1

S1

S1

S1

S1

S2