Macro synfx_dsp::env_hold_stage

macro_rules! env_hold_stage {
    ($state: expr, $stage_idx: expr, $time_ms: expr, $else: block) => { ... };
}

Holds the previous state.current value for $time_ms.

See also EnvState about the first argument $state. $stage_idx is $stage_idx + 2 after this stage is finished.