Function pamoja_trend_slope 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pamoja_trend_slope(
    trend: *const PamojaTrend,
    out_value: *mut f32,
) -> bool

Reads the slope a trend estimator has fitted, in units per reading.

Returns

true when there are enough readings to fit a line, with the slope written to out_value. A positive slope is a rising signal.

Safety

trend must be a live handle or null, and out_value must point to a writable float.