Used for audio processing or synthesis algorithms, where the normalized time is used to apply effects or transformations to an audio signal based on its position in time. Values returned: 0 to 1 from 0 to the number of points/samples/frames/etc.

normalized_time.m

AVAudioFramePosition frame = 0;
AVAudioFramePosition * frame_t = &frame;
AVAudioFrameCount frame_count = 44100;

simd_double1 time;
simd_double1 * time_t = &time;
typedef simd_double1 normalized_time_ref[frame_count];
typeof(normalized_time_ref) normalized_time;
simd_double1 * normalized_time_ptr = &normalized_time[0];

for (*frame_t = 0; *frame_t < frame_count; *frame_t += 1) {
    *(time_t) = 0.0 + ((((*frame_t - 0.0) * (1.0 - 0.0))) / (~-frame_count - 0.0));
    *(normalized_time_ptr + *frame_t) = *(time_t);
    printf("%d\tframes == %f == frames_t == %f\n", *frame_t, *(time_t), *(normalized_time_ptr + *frame_t));
}

for (*frame_t = 0; *frame_t < frame_count; *frame_t += 1) {
    printf("time == %f\n", *(normalized_time_ptr + *frame_t));
}