sysconf radians
func[] cadd a[] b[] .
   return [ a[1] + b[1] a[2] + b[2] ]
.
func[] cexp a[] .
   p = pow 2.718281828459045235 a[1]
   return [ p * cos a[2] p * sin a[2] ]
.
print cadd cexp [ 0 pi ] [ 1 0 ]
