Omron CJ - REFERENCE MANUAL 02-2010 Reference Manual page 570

3. Instructions
Function
ASIND
ASIND(854) computes the angle (in radians) for a sine value expressed as a double-precision (64-bit)
floating-point number in words S to S+3 and places the result in words D to D+3.
(The floating point source data must be in IEEE754 format.)
The result is output to words D to D+3 as an angle (in radians) within the range of - /2 to /2.
The following diagram shows the relationship between the input data and
result.
534
–1
SIN ( S+3 S+2 S+1 S ) D+3 D+2 D+1
R
S: Input data (sine value)
R: Result (radians)
CS/CJ/NSJ Series Instructions Reference Manual (W474)
D