{ $description "Returns the " { $link sinc } " function, calculated according to " { $snippet "sin(pi * x) / (pi * x)" } ". The name " { $link sinc } " is short for \"sine cardinal\" or \"sinus cardinalis\"." }
{ $notes { $snippet "0 sinc" } " is the limit value of 1." } ;
-HELP: linspace)
-{ $values { "from" number } { "to" number } { "points" number } { "seq" sequence } }
-{ $description "Return evenly spaced numbers over a specified interval " { $snippet "[from,to)" } "." } ;
+HELP: linspace[a,b)
+{ $values { "a" number } { "b" number } { "points" number } { "seq" sequence } }
+{ $description "Return evenly spaced numbers over an interval " { $snippet "[a,b)" } "." } ;
-HELP: linspace]
-{ $values { "from" number } { "to" number } { "points" number } { "seq" sequence } }
-{ $description "Return evenly spaced numbers over a specified interval " { $snippet "[from,to]" } "." } ;
+HELP: linspace[a,b]
+{ $values { "a" number } { "b" number } { "points" number } { "seq" sequence } }
+{ $description "Return evenly spaced numbers over an interval " { $snippet "[a,b]" } "." } ;
-HELP: logspace)
-{ $values { "from" number } { "to" number } { "points" number } { "base" number } { "seq" sequence } }
-{ $description "Return evenly spaced numbers on a log scaled interval " { $snippet "[base^from,base^to)" } "." } ;
+HELP: logspace[a,b)
+{ $values { "a" number } { "b" number } { "points" number } { "base" number } { "seq" sequence } }
+{ $description "Return evenly spaced numbers on a log scaled interval " { $snippet "[base^a,base^b)" } "." } ;
-HELP: logspace]
-{ $values { "from" number } { "to" number } { "points" number } { "base" number } { "seq" sequence } }
-{ $description "Return evenly spaced numbers on a log scaled interval " { $snippet "[base^from,base^to]" } "." } ;
+HELP: logspace[a,b]
+{ $values { "a" number } { "b" number } { "points" number } { "base" number } { "seq" sequence } }
+{ $description "Return evenly spaced numbers on a log scaled interval " { $snippet "[base^a,base^b]" } "." } ;
{ 0 1 0 0 2 3 }
} [ { 1 2 1 1 3 4 } unique-indices ] unit-test
-{ { 1 8+4/5 16+3/5 24+2/5 32+1/5 } } [ 1 40 5 linspace) >array ] unit-test
-{ { 1 10+3/4 20+1/2 30+1/4 40 } } [ 1 40 5 linspace] >array ] unit-test
+{ { 1 8+4/5 16+3/5 24+2/5 32+1/5 } } [ 1 40 5 linspace[a,b) >array ] unit-test
+{ { 1 10+3/4 20+1/2 30+1/4 40 } } [ 1 40 5 linspace[a,b] >array ] unit-test
! Copyright (C) 2012 John Benediktsson
! See http://factorcode.org/license.txt for BSD license
-USING: arrays assocs assocs.extras combinators.short-circuit fry
-grouping kernel locals math math.combinatorics math.constants
-math.functions math.order math.primes math.ranges
-math.ranges.private math.statistics math.vectors memoize
-random sequences sequences.extras sets sorting ;
+USING: arrays assocs assocs.extras combinators
+combinators.short-circuit fry grouping kernel locals math
+math.combinatorics math.constants math.functions math.order
+math.primes math.ranges math.ranges.private math.statistics
+math.vectors memoize random sequences sequences.extras sets
+sorting ;
IN: math.extras
PRIVATE>
-: linspace) ( from to points -- seq )
+: linspace[a,b) ( a b points -- seq )
steps ,b) <range> ;
-: linspace] ( from to points -- seq )
+: linspace[a,b] ( a b points -- seq )
{
{ [ dup 1 < ] [ 3drop { } ] }
{ [ dup 1 = ] [ 2drop 1array ] }
- [ steps <range> ]
+ [ 1 - steps <range> ]
} cond ;
-: logspace) ( from to points base -- seq )
- [ linspace) ] dip swap n^v ;
+: logspace[a,b) ( a b points base -- seq )
+ [ linspace[a,b) ] dip swap n^v ;
-: logspace] ( from to points base -- seq )
- [ linspace] ] dip swap n^v ;
+: logspace[a,b] ( a b points base -- seq )
+ [ linspace[a,b] ] dip swap n^v ;