Signum function, Sin function, Signum( a ) – Delta RMC151 User Manual
Page 380: Sin( a )
RMC70/150 and RMCTools User Manual
n (DINT)
The number of times to shift a. n must be between 0 and 31.
Return Value
Returns the same data type as a.
Remarks
The result of an invalid n is undefined.
Examples
SHR(16#00000008, 2) returns 16#00000002
5.14.2.39. SIGNUM Function
SIGNUM(a)
Returns -1 if a is negative, +1 if a is positive, and 0 if a is zero.
Parameters
a (REAL or DINT)
The input value.
Return Value
The same data type as a.
Examples
SIGNUM(0.001) returns 1.0
SIGNUM(0.0) returns 0.0
SIGNUM(-100) returns -1
5.14.2.40. SIN Function
SIN(a)
Returns the sine of a.
Parameters
a (REAL)
The input value in radians.
Return Value
Returns a REAL.
Remarks
Notice a is in radians. To convert a value from degrees to radians, multiply the degrees
value by
π
/180. The RMC has an M_PI constant for
π
.
Examples
SIN(1.5707964) returns 1.0
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