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Double-precision Floating-point Instructions Section 3-15
If the absolute value of the result is greater than the maximum value that can
be expressed as floating-point data, the Overflow Flag will turn ON and the
result will be output as
±∞.
The following diagram shows the relationship between the angle and result.
Flags
Precautions The source data in words S to S+3 must be in IEEE754 floating-point data for-
mat.
3-15-14 DOUBLE ARC SINE: ASIND(854)
Purpose Calculates the arc sine of a double-precision (64-bit) floating-point number
and places the result in the specified destination words. (The arc sine function
is the inverse of the sine function; it returns the angle that produces a given
sine value between –1 and 1.)
Ladder Symbol
R
S: Angle (radian) data
R: Result (tangent)
Name Label Operation
Error Flag ER ON if the source data is not a number (NaN).
ON if the absolute value of the source data exceeds
65,535.
OFF in all other cases.
Equals Flag = ON if both the exponent and mantissa of the result are 0.
OFF in all other cases.
Overflow Flag OF ON if the absolute value of the result is too large to be
expressed as a double-precision (64-bit) floating-point
value.
Underflow Flag UF Unchanged
Negative Flag N ON if the result is negative.
OFF in all other cases.
ASIND(854)
S
D
S: First source word
D: First destination word
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