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(35S) Formula for Fibonacci Numbers
05-29-2014, 05:24 AM (This post was last modified: 06-15-2017 01:26 PM by Gene.)
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(35S) Formula for Fibonacci Numbers
The formula finds the exact Fibonacci number for positive integer N on stack level X for N from 0 to 59, for higher values the result is approximate:


Improvements or alternative approaches welcome.

NB In case REGX is unfamiliar, access to REGX when entering a programme is via "EQN" key, setting algebraic mode, "R↓" key, giving access to registers x, y, z & t, & then choosing the desired register, ie REGX is the content of stack level X.
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(35S) Formula for Fibonacci Numbers - Gerald H - 05-29-2014 05:24 AM

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