HdrHistogram_c is a C port of High Dynamic Range (HDR) Histogram. This port contains a subset of the functionality supported by the Java implementation. The current supported features are: - Standard histogram with 64 bit counts (32/16 bit counts not supported) - All iterator types (all values, recorded, percentiles, linear, logarithmic) - Histogram serialisation (encoding version 1.2, decoding 1.0-1.2) - Reader/writer phaser and interval recorder