Numeric error propagation: Difference between revisions
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m (J: explain why we have @}. in the unc definition) |
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unc=: {:@}."1 : ,. |
unc=: {:@}."1 : ,. |
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dist=: +/&.:*:</lang> |
dist=: +/&.:*:</lang> |
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Note that if a number has no uncertainty assigned to it, we assume the uncertainty is zero. |
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Jumping into the example values, for illustration purposes: |
Jumping into the example values, for illustration purposes: |
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<lang j> exp&0.5 (x1 sub x2) add&(exp&2) y1 sub y2 |
<lang j> exp&0.5 (x1 sub x2) add&(exp&2) y1 sub y2 |
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111.803 2.48717</lang> |
111.803 2.48717</lang> |
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=={{header|Java}}== |
=={{header|Java}}== |
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<lang java>public class Approx { |
<lang java>public class Approx { |
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