Provide mathematical, string and aggregate functions for SQL queries using the SQLite loadable extensions mechanism. Math functions: acos, asin, atan, atn2, atan2, acosh, asinh, atanh, difference, degrees, radians, cos, sin, tan, cot, cosh, sinh, tanh, coth, exp, log, log10, power, sign, sqrt, square, ceil, floor, pi String functions: replicate, charindex, leftstr, rightstr, ltrim, rtrim, trim, replace, reverse, proper, padl, padr, padc, strfilter Aggregate functions: stdev, variance, mode, median, lower_quartile, upper_quartile WWW: http://www.sqlite.org/contrib