JezK
Edit File: big_math.rbs
# <!-- rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb --> # Provides mathematical functions. # # Example: # # require "bigdecimal/math" # # include BigMath # # a = BigDecimal((PI(100)/2).to_s) # puts sin(a,100) # => 0.99999999999999999999......e0 # module BigMath # <!-- # rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb # - E(numeric) -> BigDecimal # --> # Computes e (the base of natural logarithms) to the specified number of digits # of precision, `numeric`. # # BigMath.E(10).to_s # #=> "0.271828182845904523536028752390026306410273e1" # def self?.E: (Numeric prec) -> BigDecimal # <!-- # rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb # - PI(numeric) -> BigDecimal # --> # Computes the value of pi to the specified number of digits of precision, # `numeric`. # # BigMath.PI(10).to_s # #=> "0.3141592653589793238462643388813853786957412e1" # def self?.PI: (Numeric prec) -> BigDecimal # <!-- # rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb # - atan(decimal, numeric) -> BigDecimal # --> # Computes the arctangent of `decimal` to the specified number of digits of # precision, `numeric`. # # If `decimal` is NaN, returns NaN. # # BigMath.atan(BigDecimal('-1'), 16).to_s # #=> "-0.785398163397448309615660845819878471907514682065e0" # def self?.atan: (BigDecimal x, Numeric prec) -> BigDecimal # <!-- # rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb # - cos(decimal, numeric) -> BigDecimal # --> # Computes the cosine of `decimal` to the specified number of digits of # precision, `numeric`. # # If `decimal` is Infinity or NaN, returns NaN. # # BigMath.cos(BigMath.PI(4), 16).to_s # #=> "-0.999999999999999999999999999999856613163740061349e0" # def self?.cos: (BigDecimal x, Numeric prec) -> BigDecimal # <!-- # rdoc-file=ext/bigdecimal/bigdecimal.c # - BigMath.exp(decimal, numeric) -> BigDecimal # --> # Computes the value of e (the base of natural logarithms) raised to the power # of `decimal`, to the specified number of digits of precision. # # If `decimal` is infinity, returns Infinity. # # If `decimal` is NaN, returns NaN. # def self?.exp: (BigDecimal, Numeric prec) -> BigDecimal # <!-- # rdoc-file=ext/bigdecimal/bigdecimal.c # - BigMath.log(decimal, numeric) -> BigDecimal # --> # Computes the natural logarithm of `decimal` to the specified number of digits # of precision, `numeric`. # # If `decimal` is zero or negative, raises Math::DomainError. # # If `decimal` is positive infinity, returns Infinity. # # If `decimal` is NaN, returns NaN. # def self?.log: (BigDecimal, Numeric prec) -> BigDecimal # <!-- # rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb # - sin(decimal, numeric) -> BigDecimal # --> # Computes the sine of `decimal` to the specified number of digits of precision, # `numeric`. # # If `decimal` is Infinity or NaN, returns NaN. # # BigMath.sin(BigMath.PI(5)/4, 5).to_s # #=> "0.70710678118654752440082036563292800375e0" # def self?.sin: (BigDecimal x, Numeric prec) -> BigDecimal # <!-- # rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb # - sqrt(decimal, numeric) -> BigDecimal # --> # Computes the square root of `decimal` to the specified number of digits of # precision, `numeric`. # # BigMath.sqrt(BigDecimal('2'), 16).to_s # #=> "0.1414213562373095048801688724e1" # def self?.sqrt: (BigDecimal x, Numeric prec) -> BigDecimal end