(/ pi 2) as a single-float
(/ pi 2)
single-float
graphics-ports
The constant fpi-by-2 is the result of (float (* 0.5 cl:pi) 1.0). It is a cl:single-float
fpi-by-2
(float (* 0.5 cl:pi) 1.0)
cl:single-float
fpi f2pi
CAPI User Guide and Reference Manual (Unix version) - 3 Aug 2017