Horizontal sundial calculations: Difference between revisions
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m (→{{header|REXX}}: expanded comment about pi.) |
m (→{{header|REXX}}: corrected spelling error.) |
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/*John Machin's formula. */ |
/*John Machin's formula. */ |
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d2d: return arg(1)//360 /*normalize degrees►1 unit circle*/ |
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d2r: return r2r(arg(1)*pi()/180) /*convert degrees ──► radians. */ |
d2r: return r2r(arg(1)*pi()/180) /*convert degrees ──► radians. */ |
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r2d: return d2d((arg(1)*180/pi())) /*convert radians ──► degrees. */ |
r2d: return d2d((arg(1)*180/pi())) /*convert radians ──► degrees. */ |