Price fraction: Difference between revisions
Rename Perl 6 -> Raku, alphabetize, minor clean-up
Langurmonkey (talk | contribs) m (→{{header|langur}}: corrected end of range comparison) |
Thundergnat (talk | contribs) (Rename Perl 6 -> Raku, alphabetize, minor clean-up) |
||
Line 183:
</pre>
</div>
=={{header|ALGOL 68}}==
Line 262 ⟶ 226:
Converted to standard : 0.54
</pre>
=={{header|AutoHotkey}}==
<lang AutoHotkey>; Submitted by MasterFocus --- http://tiny.cc/iTunis
Loop
{
InputBox, OutputVar, Price Fraction Example, Insert the value to be rounded.`n* [ 0 < value < 1 ]`n* Press ESC or Cancel to exit, , 200, 150
If ErrorLevel
Break
MsgBox % "Input: " OutputVar "`nResult: " PriceFraction( OutputVar )
}
;-----------------------------------------
PriceFraction( p_Input )
{
If p_Input is not float ; returns 0 if input is not a float
Return 0
If ( ( p_Input <= 0 ) OR ( p_Input >= 1 ) ) ; returns 0 is input is out of range
Return 0
; declaring the table (arbitrary delimiters in use are '§' and '|')
l_List := "0.06|0.10§0.11|0.18§0.16|0.26§0.21|0.32§0.26|0.38§0.31|0.44§0.36|0.50§0.41|0.54§0.46|0.58§0.51|0.62§0.56|0.66§0.61|0.70§0.66|0.74§0.71|0.78§0.76|0.82§0.81|0.86§0.86|0.90§0.91|0.94§0.96|0.98§1.01|1.00"
Loop, Parse, l_List, § ; retrieves each field (delimited by '§')
{
StringSplit, l_Array, A_LoopField, | ; splits current field (using delimiter '|')
If ( p_Input <= l_Array1 )
Return l_Array2 ; returns the second value if input <= first value
}
Return 0 ; returns 0, indicating failure (shouldn't be reached though)
}</lang>
=={{header|AWK}}==
Line 1,045:
printf(1, "%.2f %.2f\n", { i/100, price_fix(i/100) })
end for</lang>
=={{header|F_Sharp|F#}}==
Line 1,330 ⟶ 1,329:
0.96 = 1.00 0.97 = 1.00 0.98 = 1.00 0.99 = 1.00 1.00 = 1.00
</pre>
=={{header|Go}}==
<lang go>func pf(v float64) float64 {
Line 1,693:
0.194047 -> 0.32
0.724852 -> 0.82</pre>
=={{header|JavaScript}}==
Line 2,010 ⟶ 2,009:
{.70, x < .61}, {.74, x < .66}, {.78, x < .71}, {.82, x < .76},
{.86, x < .81}, {.90, x < .86}, {.94, x < .91}, {.98, x < .96}}, 1]</lang>
=={{header|MATLAB}} / {{header|Octave}}==
Line 2,427 ⟶ 2,425:
}
</lang>
=={{header|Phix}}==
Line 2,885 ⟶ 2,783:
(define (convert x) (for/or ([c table]) (and (< x (car c)) (cadr c))))
</lang>
=={{header|Raku}}==
(formerly Perl 6)
Simple solution, doing a linear search.<br>
Note that in Perl 6 we don't have to worry about floating-point misrepresentations of decimals, because decimal fractions are stored as rationals.
{{works with|rakudo|2016.07}}
<lang perl6>sub price-fraction ($n where 0..1) {
when $n < 0.06 { 0.10 }
when $n < 0.11 { 0.18 }
when $n < 0.16 { 0.26 }
when $n < 0.21 { 0.32 }
when $n < 0.26 { 0.38 }
when $n < 0.31 { 0.44 }
when $n < 0.36 { 0.50 }
when $n < 0.41 { 0.54 }
when $n < 0.46 { 0.58 }
when $n < 0.51 { 0.62 }
when $n < 0.56 { 0.66 }
when $n < 0.61 { 0.70 }
when $n < 0.66 { 0.74 }
when $n < 0.71 { 0.78 }
when $n < 0.76 { 0.82 }
when $n < 0.81 { 0.86 }
when $n < 0.86 { 0.90 }
when $n < 0.91 { 0.94 }
when $n < 0.96 { 0.98 }
default { 1.00 }
}
while prompt("value: ") -> $value {
say price-fraction(+$value);
}</lang>
If we expect to rescale many prices, a better approach would be to build a look-up array of 101 entries.
Memory is cheap, and array indexing is blazing fast.
<lang perl6>my @price = map *.value, flat
( 0 ..^ 6 X=> 0.10),
( 6 ..^ 11 X=> 0.18),
(11 ..^ 16 X=> 0.26),
(16 ..^ 21 X=> 0.32),
(21 ..^ 26 X=> 0.38),
(26 ..^ 31 X=> 0.44),
(31 ..^ 36 X=> 0.50),
(36 ..^ 41 X=> 0.54),
(41 ..^ 46 X=> 0.58),
(46 ..^ 51 X=> 0.62),
(51 ..^ 56 X=> 0.66),
(56 ..^ 61 X=> 0.70),
(61 ..^ 66 X=> 0.74),
(66 ..^ 71 X=> 0.78),
(71 ..^ 76 X=> 0.82),
(76 ..^ 81 X=> 0.86),
(81 ..^ 86 X=> 0.90),
(86 ..^ 91 X=> 0.94),
(91 ..^ 96 X=> 0.98),
(96 ..^101 X=> 1.00),
;
while prompt("value: ") -> $value {
say @price[$value * 100] // "Out of range";
}</lang>
We can also build this same look-up array by parsing the table as formatted in the task description:
{{works with|rakudo|2016.07}}
<lang perl6>my $table = q:to/END/;
>= 0.00 < 0.06 := 0.10
>= 0.06 < 0.11 := 0.18
>= 0.11 < 0.16 := 0.26
>= 0.16 < 0.21 := 0.32
>= 0.21 < 0.26 := 0.38
>= 0.26 < 0.31 := 0.44
>= 0.31 < 0.36 := 0.50
>= 0.36 < 0.41 := 0.54
>= 0.41 < 0.46 := 0.58
>= 0.46 < 0.51 := 0.62
>= 0.51 < 0.56 := 0.66
>= 0.56 < 0.61 := 0.70
>= 0.61 < 0.66 := 0.74
>= 0.66 < 0.71 := 0.78
>= 0.71 < 0.76 := 0.82
>= 0.76 < 0.81 := 0.86
>= 0.81 < 0.86 := 0.90
>= 0.86 < 0.91 := 0.94
>= 0.91 < 0.96 := 0.98
>= 0.96 < 1.01 := 1.00
END
my @price;
for $table.lines {
/:s '>=' (\S+) '<' (\S+) ':=' (\S+)/;
@price[$0*100 ..^ $1*100] »=» +$2;
}
while prompt("value: ") -> $value {
say @price[$value * 100] // "Out of range";
}</lang>
=={{header|Raven}}==
| |||