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require 'rbconfig'
module Distribution
module T
module Statistics2_
class << self
# There are some problem on i686 with t on statistics2
if true || !RbConfig::CONFIG['arch'] =~ /i686/
# T cumulative distribution function (cdf).
#
# Returns the integral of t-distribution
# with n degrees of freedom over (-Infty, x].
#
def cdf(x, k)
Statistics2.tdist(k, x)
end
# Return the P-value of the corresponding integral with
# k degrees of freedom
def quantile(pr, k)
Statistics2.ptdist(k, pr)
end
alias_method :p_value, :quantile
end
end
end
end
end
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