Fixedpoint: Difference between revisions
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{{primitive|f/y<br>f\y}} |
{{primitive|f/y<br>f\y}} |
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'''fixedpoint''' and '''scan-fixedpoint''' are adverbs |
'''fixedpoint''' and '''scan-fixedpoint''' are adverbs that apply a [[monadic]] function to a given noun <code>y</code> until it stops changing, or the initial value has been repeated. |
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Fixedpoint(<code>/</code>) produces a single value, the final value. |
Fixedpoint(<code>/</code>) produces a single value, the final value. |
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Revision as of 08:41, 31 July 2021
Fixedpoint
f/y
f\y
f\y
fixedpoint and scan-fixedpoint are adverbs that apply a monadic function to a given noun y until it stops changing, or the initial value has been repeated.
Fixedpoint(/) produces a single value, the final value.
Scan-fixedpoint(\) produces a list of all intermediate values. It is often useful for debugging fixedpoint.
{0|x-1}/56
0
{0|x-1}\56
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0