Crate rmathlib

A Rust port of R’s C Library of Special Functions.

Functions

• bd0
  Calculates a stable deviance part using a method that reduces relative error
• bratio
  Evaluation of the Incomplete Beta function I_x(a,b)
• chebyshev_eval
  chebyshev_eval evaluates the n-term Chebyshev series a at x.
• chebyshev_init
  chebyshev_init determines the number of terms for the double precision orthogonal series dos needed to insure the error is no larger than eta. Ordinarily eta will be chosen to be one-tenth machine precision.
• cospi
  Calculates the cosine of a number given in multiples of π (pi).
• dgamma
  AUTHOR Catherine Loader, catherine@research.bell-labs.com. October 23, 2000.
• dnorm
• dpois
  checks argument validity and calls dpois_raw().
• ebd0
  Compute x * log (x / M) + (M - x) aka -x * log1pmx ((M - x) / x)
• gammafn
  This function computes the value of the gamma function.
• i1mach
• lbeta
  This function returns the value of the log beta function
• lgammacor
  Compute the log gamma correction factor for x >= 10 so that
• lgammafn
  The function lgammafn computes log|gamma(x)|. The function lgammafn_sign in addition assigns the sign of the gamma function to the address in the second argument if this is not NULL.
• lgammafn_sign
  Compute the log gamma function and its sign.
• log1pmx
  Accurate calculation of log(1+x)-x, particularly for small x.
• logspace_add
  Compute the log of a sum from logs of terms, i.e., log(exp(logx) + exp(logy)) without causing overflows and without throwing away large handfuls of accuracy.
• pbeta
  Returns distribution function of the beta distribution. ( = The incomplete beta ratio I_x(p,q) ).
• pgamma
  Computes the distribution function for the gamma distribution with shape parameter alph and scale parameter scale.
• pnorm
• pt
  The PDF of the Student’s t-distribution.
• qnorm
• sinpi
  Calculates the sinus of a number given in multiples of π (pi).
• stirlerr
  Computes the log of the error term in Stirling’s formula.
• tanpi
  Calculates the tangent of a number given in multiples of π (pi).