532
EXPD, EXPDP
Conversion from natural logarithm to common logarithm
In the CPU module, calculation is made using a natural logarithm.
To obtain a common logarithm value, enter in,
a common logarithm value divided by 0.43429.
: Data of which the exponential value is obtained or head number of the devices where the data is stored (real number)
: Head number of the devices where the operation result will be stored (real number)
F
unct
i
on
(1) Returns the exponent of the value designated by , and stores the results of the operation at the device designated by
.
(2) Exponent operations are calculated taking the base (e) to be "2.71828".
(3) When the operation results in -0 or an underflow, the result is processed as 0.
Operat
i
on
E
rror
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into
SD0.
7.12.22 EXPD, EXPDP
Exponent operation on floating-point data
(Double precision)
7.12.22
EXPD, EXPDP
Setting
Data
Internal Devices
R, ZR
J \
U \G
Zn
Constants
E
Other
Bit
Word
Bit
Word
––
––
––
––
––
––
––
Error
code
Error details
Q00J/
Q00/
Q01
QnH
QnPH QnPRH
QnU
LCPU
4140
The specified device value is not within the following range:
0, 2
-1022
| Specified device value | < 2
1024
The specified device value is -0.
––
––
––
––
4141
The operation result exceeds the following range (when an overflow
occurs):
2
1024
| Operation result |
––
––
––
––
S
Universal
LCPU
Bas
i
c
Hi
gh
performance
Process
Redundant
Command
Command
E
XPDP
EXPD
EXPDP
E
XPD
S
D
S
D
S
D
S
D
S
D
e
(
)
(
)
+
3
S
+
2
S
S
+
1
S
+
3
D
+
2
D
D
+
1
D
6
4-
b
i
t
f
l
oat
i
ng
-
po
i
nt
rea
l
number
6
4-
b
i
t
f
l
oat
i
ng
-
po
i
nt
rea
l
number