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September 2017 Update

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Ingy döt Net 2017-09-23 10:01:46 +02:00
parent bba7bfd280
commit ba8067c3b7
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15
Task/Jensens-Device/REXX/jensens-device.rexx
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@ -1,12 +1,15 @@
/*REXX program demonstrates Jensen's device (via call subroutine, and args by name).*/
numeric digits 90 /*use 90 decimal digits (9 is default).*/
parse arg d .; if d=='' | d=="," then d=100 /*Not specified? Then use the default.*/
numeric digits d /*use D decimal digits (9 is default)*/
say 'using ' d " decimal digits:" /*display what's being used for digits.*/
say
say sum( 'i', "1", '100', "1/i" ) /*invoke SUM (100th harmonic number).*/
exit /*stick a fork in it, we're all done. */
/*──────────────────────────────────────────────────────────────────────────────────────*/
sum: procedure; parse arg j,start,finish,exp; $=0
sum: procedure; parse arg j,start,finish,exp; $=0
interpret 'do' j "=" start 'to' finish"; $=$+" exp '; end'
/* ──── ═ ─── ═════ ──── ══════────────── ═══ ───────── */
/* lit var lit var lit var literal var literal */
interpret 'do' j "=" start 'to' finish"; $=$+" exp '; end'
/* ──── ═ ─── ═════ ──── ══════────────── ═══ ───────── */
/* lit var lit var lit var literal var literal */
return $
return $