JPhrases/Representations

8C. Representations

d0=: >:@<.@^.	Length to represent y in base x
d1=: d0 # [	Base to represent integer y in base x
d2=: d1 #:]	Base x rep of decimal integer y
m3=: #:@i.@>:	Binary reps of integers from 0 to y
m4=: 10"_ d2 ]	Base 10 rep of decimal integer y
m5=: 16"_ d2 ]	Base 16 rep of decimal integer y
d6=: (>:@<.@^. # [) #: ]	Base x rep of decimal integer y
d7=: ] #:~ >:@<.@^. # [	Base x rep of decimal integer y
m8=: 100"_ d2 ]	Base 100 rep of decimal integer y
m9=: 0 1&#:	Whole and fractional parts of y
m10=: 10 100 1000"_ #: ]	Mixed base 10 ^ 1 2 3 rep of y
m11=: #.	Integer from Boolean list y
m12=: <.@(10&^.)@(('.'&~: # ]) &.": % ])	Number of decimal places in y
m14=: ]&__	Negative infinity
m15=: _:	Positive infinity
a16=: (&#.) (^:_1)	Base x rep of decimal integer y
m17=: [: (%"1 [: ,:~ +./) ,:&1	Fraction equivalent to y