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double | hist_bucket_to_double (hist_bucket_t hb) |
| Returns the edge of the histogram bucket closer to zero.
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double | hist_bucket_midpoint (hist_bucket_t in) |
| Calculate mid-point of the bucket.
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double | hist_bucket_to_double_bin_width (hist_bucket_t hb) |
| Get the width of the hist_bucket.
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hist_bucket_t | double_to_hist_bucket (double d) |
| Create the bucket that a value belongs to.
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hist_bucket_t | int_scale_to_hist_bucket (int64_t value, int scale) |
| Create the bucket that value * 10^(scale) belongs to.
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int | hist_bucket_to_string (hist_bucket_t hb, char *buf) |
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histogram_t * | hist_alloc (void) |
| Create a new histogram, uses default allocator.
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histogram_t * | hist_alloc_nbins (int nbins) |
| Create a new histogram with preallocated bins, uses default allocator.
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histogram_t * | hist_fast_alloc (void) |
| Create a fast-histogram. More...
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histogram_t * | hist_fast_alloc_nbins (int nbins) |
| Create a fast-histogram with preallocated bins, uses default allocator.
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histogram_t * | hist_clone (const histogram_t *other) |
| Create an exact copy of other, uses default allocator.
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histogram_t * | hist_alloc_with_allocator (const hist_allocator_t *alloc) |
| Create a new histogram, uses custom allocator.
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histogram_t * | hist_alloc_nbins_with_allocator (int nbins, const hist_allocator_t *alloc) |
| Create a new histogram with preallocated bins, uses custom allocator.
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histogram_t * | hist_fast_alloc_with_allocator (const hist_allocator_t *alloc) |
| Create a fast-histogram. More...
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histogram_t * | hist_fast_alloc_nbins_with_allocator (int nbins, const hist_allocator_t *alloc) |
| Create a fast-histogram with preallocated bins, uses custom allocator.
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histogram_t * | hist_clone_with_allocator (const histogram_t *other, const hist_allocator_t *alloc) |
| Create an exact copy of other, uses custom allocator.
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void | hist_free (histogram_t *hist) |
| Free a (fast-) histogram, frees with allocator chosen during the alloc/clone.
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uint64_t | hist_insert (histogram_t *hist, double val, uint64_t count) |
| insert a value into a histogram count times More...
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uint64_t | hist_remove (histogram_t *hist, double val, uint64_t count) |
| Remove data from a histogram count times, returns the actual count removed protecting from underflow.
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uint64_t | hist_remove_raw (histogram_t *hist, hist_bucket_t hb, uint64_t count) |
| Remove data from a histogram count times, returns the actual count removed protecting from underflow.
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uint64_t | hist_insert_raw (histogram_t *hist, hist_bucket_t hb, uint64_t count) |
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uint64_t | hist_insert_raw_end (histogram_t *hist, hist_bucket_t hb, uint64_t count) |
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int | hist_bucket_count (const histogram_t *hist) |
| Get the number of used buckets in a histogram.
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int | hist_num_buckets (const histogram_t *hist) |
| Same as hist_bucket_count.
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uint64_t | hist_sample_count (const histogram_t *hist) |
| Get the total number of values stored in the histogram.
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int | hist_bucket_idx (const histogram_t *hist, int idx, double *v, uint64_t *c) |
| Get value+count for bucket at position idx. Valid positions are 0 .. hist_bucket_count()
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int | hist_bucket_idx_bucket (const histogram_t *hist, int idx, hist_bucket_t *b, uint64_t *c) |
| Get bucket+count for bucket at position idx. Valid positions are 0 .. hist_bucket_count()
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int | hist_accumulate (histogram_t *tgt, const histogram_t *const *src, int cnt) |
| Accumulate bins from each of cnt histograms in src onto tgt.
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int | hist_subtract (histogram_t *tgt, const histogram_t *const *src, int cnt) |
| Subtract bins from each of cnt histograms in src from tgt, return -1 on underrun error.
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int | hist_subtract_as_int64 (histogram_t *tgt, const histogram_t *src) |
| Subtract bins in src from tgt treating the result count as signed, return -1 on overflow error.
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int | hist_add_as_int64 (histogram_t *tgt, const histogram_t *src) |
| Add bins in src from tgt treating src counts as signed, return -1 on overflow error.
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void | hist_clear (histogram_t *hist) |
| Clear data fast. Keeps buckets allocated.
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uint64_t | hist_insert_intscale (histogram_t *hist, int64_t val, int scale, uint64_t count) |
| Insert a value into a histogram value = val * 10^(scale)
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ssize_t | hist_serialize (const histogram_t *h, void *buff, ssize_t len) |
| Serialize histogram to binary data.
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ssize_t | hist_deserialize (histogram_t *h, const void *buff, ssize_t len) |
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ssize_t | hist_serialize_estimate (const histogram_t *h) |
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ssize_t | hist_serialize_b64 (const histogram_t *h, char *b64_serialized_histo_buff, ssize_t buff_len) |
| Return histogram serialization as base64 encoded string.
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ssize_t | hist_deserialize_b64 (histogram_t *h, const void *b64_string, ssize_t b64_string_len) |
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ssize_t | hist_serialize_b64_estimate (const histogram_t *h) |
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void | hist_remove_zeroes (histogram_t *h) |
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histogram_t * | hist_compress_mbe (const histogram_t *h, int8_t mbe) |
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double | hist_approx_mean (const histogram_t *) |
| Approximate mean value of all values stored in the histogram.
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double | hist_approx_sum (const histogram_t *) |
| Approximate the sum of all values stored in the histogram.
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double | hist_approx_stddev (const histogram_t *) |
| Approximate the standard deviation of all values stored in the histogram.
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double | hist_approx_moment (const histogram_t *hist, double k) |
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void | hist_clamp (histogram_t *hist, double lower, double upper) |
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uint64_t | hist_approx_count_below (const histogram_t *hist, double threshold) |
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uint64_t | hist_approx_count_above (const histogram_t *hist, double threshold) |
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uint64_t | hist_approx_count_nearby (const histogram_t *hist, double value) |
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int | hist_approx_quantile (const histogram_t *, const double *q_in, int nq, double *q_out) |
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int | hist_approx_inverse_quantile (const histogram_t *, const double *iq_in, int niq, double *iq_out) |
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