88 lines
2.3 KiB
Ruby
88 lines
2.3 KiB
Ruby
module Rpl
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module Lang
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module Core
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module_function
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# pi constant
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def pi( stack, dictionary )
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stack << { type: :numeric,
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base: 10,
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value: BigMath.PI( Rpl::Lang.precision ) }
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[stack, dictionary]
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end
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# sinus
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def sinus( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[numeric]] )
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stack << { type: :numeric,
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base: Rpl::Lang.infer_resulting_base( args ),
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value: BigMath.sin( BigDecimal( args[0][:value], Rpl::Lang.precision ), Rpl::Lang.precision ) }
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[stack, dictionary]
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end
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# https://rosettacode.org/wiki/Trigonometric_functions#Ruby
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# arg sinus
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def arg_sinus( stack, dictionary )
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Rpl::Lang.eval( stack, dictionary, '
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dup abs 1 ==
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« 𝛑 2 / * »
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« dup sq 1 swap - sqrt / atan »
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ifte' )
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end
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# cosinus
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def cosinus( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[numeric]] )
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stack << { type: :numeric,
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base: Rpl::Lang.infer_resulting_base( args ),
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value: BigMath.cos( BigDecimal( args[0][:value], Rpl::Lang.precision ), Rpl::Lang.precision ) }
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[stack, dictionary]
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end
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# arg cosinus
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def arg_cosinus( stack, dictionary )
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Rpl::Lang.eval( stack, dictionary, '
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dup 0 ==
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« drop 𝛑 2 / »
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«
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dup sq 1 swap - sqrt / atan
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dup 0 <
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« 𝛑 + »
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ift
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»
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ifte' )
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end
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# tangent
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def tangent( stack, dictionary )
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Rpl::Lang.eval( stack, dictionary, 'dup sin swap cos /' )
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end
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# arg tangent
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def arg_tangent( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[numeric]] )
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stack << { type: :numeric,
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base: Rpl::Lang.infer_resulting_base( args ),
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value: BigMath.atan( BigDecimal( args[0][:value], Rpl::Lang.precision ), Rpl::Lang.precision ) }
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[stack, dictionary]
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end
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# convert degrees to radians
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def degrees_to_radians( stack, dictionary )
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Rpl::Lang.eval( stack, dictionary, '𝛑 180 / *' )
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end
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# convert radians to degrees
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def radians_to_degrees( stack, dictionary )
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Rpl::Lang.eval( stack, dictionary, '𝛑 180 / /' )
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end
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end
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end
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end
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