-- Math constants — pi, tau, e. Added 0.12.1 so agents stop hardcoding
-- `3.14159...` or reconstructing pi via `* 2 (atan2 0 -1)` (fft-peak
-- rerun12 surfaced both shapes). All three are zero-arg builtins
-- returning the canonical IEEE-754 double-precision value.
-- pi: half a turn in radians.
get-pi>n;pi
-- run: get-pi
-- out: 3.141592653589793
-- tau: a full turn in radians (== 2*pi). Useful when "one revolution"
-- is the natural unit, e.g. FFT bin frequencies, polar angle sweeps.
get-tau>n;tau
-- run: get-tau
-- out: 6.283185307179586
-- e: Euler's number. Base of the natural log; `exp 1` agrees.
get-e>n;e
-- run: get-e
-- out: 2.718281828459045
-- Constants compose in expressions like any number. Round-trip:
-- a sine sweep over a half-turn should land cleanly at the midpoint.
sin-at-half-pi>n;sin (/ pi 2)
-- run: sin-at-half-pi
-- out: 1