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629
Floating-point Math Instructions
Section 3-15
Description
ATAN(465) computes the angle (in radians) for a tangent value expressed as
a 32-bit floating-point number in S+1 and S and places the result in R+1 and
R.
(The floating point source data must be in IEEE754 format.)
The result is output to words R+1 and R as an angle (in radians) within the
range of –
π
/2 to
π
/2.
The following diagram shows the relationship between the input data and
result.
Flags
Precautions
The source data in S+1 and S must be in IEEE754 floating-point data format.
R+1
R
S
S+1
TAN
–1
Source (32-bit floating-point data)
Result (32-bit floating-point data)
R
S: Input data (tangent)
R: Result (radians)
Name
Label
Operation
Error Flag
ER
ON if the source data is not recognized as floating-point
data.
ON if the source data is not a number (NaN).
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
OFF
Underflow Flag
UF
OFF
Negative Flag
N
ON if the result is negative.
OFF in all other cases.
Содержание SYSMAC CS1D-CPU**
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Страница 185: ...146 List of Instructions by Function Code Section 2 4...
Страница 193: ...154 3 35 4 MOVE BIT MOVBC 568 1274 3 35 5 BIT COUNTER BCNTC 621 1276 3 35 6 GET VARIABLE ID GETID 286 1278...
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