ASIN

ASIN

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Returns the arcsine of a float in radians.

 

 

Syntax

var = ASIN( x )

 

 

Remarks

Var

A float variable such as single or double that is assigned with the ASIN of variable x.

X

The float to get the ASIN of. Input is valid from –1 to +1 and returns -p/2 to +p/2.

 

If Input is < -1 than -p/2 and input is > 1 than p/2 will returned.

 

If Input is cause of rounding effect in single-operations a little bit over 1 or -1, the value for 1.0 (-1.0) will be returned. This is the reason to give the value of the limit-point back, if Input is beyond limit. Generally the user have to take care, that Input to this function lies within –1 to +1.

 

 

All trig functions work with radians. Use deg2rad and rad2deg to convert between radians and angles.

 

 

See Also

RAD2DEG , DEG2RAD , COS , SIN , TAN , ATN , ACOS , ATN2

 

 

Example

$regfile = "m48def.dat"                                   ' specify the used micro

$crystal = 8000000                                         ' used crystal frequency

$baud = 19200                                               ' use baud rate

$hwstack = 32                                               ' default use 32 for the hardware stack

$swstack = 10                                               ' default use 10 for the SW stack

$framesize = 40                                             ' default use 40 for the frame space

 

Config Com1 = Dummy , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

 

 

Dim S As Single , X As Single

X = 0.5 : S = Asin(x)

Print S   '0.523595867

 

End