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ATAND(P)
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7.12 Special function instructions
7.12.12 TAN -1 operation on floating-point data (Double precision) (ATAND(P))
7.12.12 TAN
-1
operation on floating-point data (Double precision)
(ATAND(P))
ATAND(P)
Function
(1) The angle is calculated from the TAN (tangent) value specified by is and its result is
stored into the device specified by .
(2) The angle (operation result) stored at is stored in radian units.
For more information on the conversion between radian and angle data, see description of
RADD and DEGD instructions.
(3) When the operation results in -0 or an underflow, the result is processed as 0.
Operation Error
(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.
• The value of the specified device is not in the following range: (Error code: 4140)
0,2
-1022
| value of specified device | < 2
1024
• The value of the designated device is 0. (Error code: 4140)
• The result exceeds the following range (Operation results in an overflow):
2
1024
| Operation result | (Error code: 4141)
: TAN value of which the TAN
-1
(inverse tangent) value is obtained or head number of the devices where the
TAN value is 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
–– –– ––
–– –– –– ––
Universal
Basic
Process
High
performance
Redundant
Command
Command
ATANDP
ATAND
ATANDP
ATAND S D
S D
S
D
S
D
S
D
)
TAN (
1
+3
S
+2
S
S
+1
S
+3
D
+2
D
D
+1
D
64-bit floating-point
real number
64-bit floating-point
real number
D