angtos

(angtos angle [mode [precision]])

An angle in radians as text. Modes: 0 degrees, 1 degrees/minutes/seconds, 2 grads, 3 radians, 4 surveyor's units. Without mode or precision, AUNITS and AUPREC are used.

(angtos (/ pi 4) 0 2)   ; "45.00"
(angtos (/ pi 4) 1 4)   ; "45d0'0\""