Horner's rule for polynomial evaluation: Difference between revisions
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C.f: [[Formal power series]] |
C.f: [[Formal power series]] |
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=={{header|Ada}}== |
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<lang Ada> |
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with Ada.Text_IO, Ada.Float_Text_IO; |
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use Ada.Text_IO, Ada.Float_Text_IO; |
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procedure horners_rule is |
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type Coef is array(Positive range <>) of Float; |
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coefficients : Coef := (-19.0,7.0,-4.0,6.0); |
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x : Float := 3.0; |
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function horner(coeffs: Coef; val: Float) return Float is |
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res : Float := 0.0; |
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begin |
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for p in reverse coeffs'Range loop |
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res := res*val + coeffs(p); |
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end loop; |
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return res; |
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end horner; |
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begin |
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put(horner(coefficients,x),Aft=>1,Exp=>0); |
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end horners_rule; |
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</lang> |
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Output: |
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<pre> |
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128.0 |
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</pre> |
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=={{header|ALGOL 68}}== |
=={{header|ALGOL 68}}== |
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{{works with|ALGOL 68G}} |
{{works with|ALGOL 68G}} |
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