Function steradiansToSqdeg( sr )

Description:
Converts a solid angle from steradians to square degrees.

The unit sphere is 4*PI steradians = 360*360/PI square degrees.

Parameters:
sr (floating point)
quantity in steradians
Return Value (floating point):
quantity in sqare degrees
Example:
round(steradiansToSqdeg(4*PI)) = 41253
Signature:
double steradiansToSqdeg(double)