513
ACOS, ACOSP
1
2
3
4
4
6
7
8
7.12
Special function
instructions
7.12.9
A
COS
, A
C
OSP
: COS value of which the COS
-1
(inverse cosine) value is obtained or head number of the devices where the COS value is stored (real number)
: Head number of the devices where the operation result will be stored (real number)
*1:
Applicable for the Universal model QCPU, LCPU.
F
unct
i
on
(1) Returns the COS
-1
angle of the COS value designated by , and stores operation result at word device designated by
.
(2) The COS value designated by can be in the range of from -1.0 to 1.0.
(3) 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 RAD and DEG instructions.
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.
*2:
There are CPU modules that will not result in an operation error if -0 is specified.
For details, refer to Page 88, Section 3.2.4.
7.12.9
ACOS, ACOSP
Arc cosine operation on floating-point data (Single
precision)
7.12.9
ACOS, ACOSP
Setting
Data
Internal Devices
R, ZR
J \
U \G
Zn
Constants
E
Other
Bit
Word
Bit
Word
––
––
*1
––
––
––
*1
––
––
Error
code
Error details
Q00J/
Q00/
Q01
QnH
QnPH QnPRH
QnU
LCPU
4100
The value specified in is not within the range between -1.0 and 1.0.
––
The specified device value is -0.
*2
––
––
––
4140
The specified device value is not within the following range:
0, 2
-126
| Specified device value | < 2
128
The specified device value is -0, unnormalized number, nonnumeric,
and ±
.
––
––
––
––
4141
The operation result exceeds the following range (when an overflow
occurs):
2
128
| Operation result |
––
––
––
––
Process
High
performance
Redundant Universal
LCPU
Bas
i
c
Command
Command
ACOSP
ACOS
ACOSP
ACOS
S
D
S
D
S
D
S
D
S
D
+1
+1
S
D
S
D
COS-1
32-bit floating-point
real number
)
32-bit floating-point
real number
S
D
S