Non-decimal radices/Convert: Difference between revisions
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=={{header|Phix}}== |
=={{header|Phix}}== |
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Phix itself handles number input in the expected decimal, or binary, octal, hexadecimal, and any base from 2 to 36 using prefixes 0b |
Phix itself handles number input in the expected decimal, or binary, octal, hexadecimal, and any base from 2 to 36 using prefixes 0b, 0o, 0x/X/#, and 0(2..36)<br> |
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The (s)printf() routine can generate strings in decimal, binary, octal, or |
The (s)printf() routine can generate strings in decimal, binary, octal, hexadecimal, or base 2-36|62, using %d/e/f/g, %b, %o, %x/X, %a|A formats respectively.<br> |
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The builtin to_number() function has an inbase parameter which defaults to 10 but can be 2.. |
The builtin to_number() function has an inbase parameter which defaults to 10 but can be 2..62.<br> |
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Note however that only decimal fractions are supported in the core language itself, and to_number(), and that (s)printf's %d..A are all integer-only, and %e/f/g decimal-only.<br> |
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Also note that 0t is(/was) an alternative for 0o (octal) on desktop/Phix, but not supported by JavaScript and hence pwa/p2js.<br> |
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<lang Phix>?{26,0b11010,0o32,0t32,0x1A,0X1a,#1A,0(16)1A} -- displays {26,26,26,26,26,26,26,26} |
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printf(1,"%d == 0b%b == 0x%x\n",26) -- displays 26 == 0b11010 == 0x1A |
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<!--<lang Phix>(phixonline)--> |
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?to_number("1a",{},16) -- displays 26</lang> |
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<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span> |
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<span style="color: #0000FF;">?{</span><span style="color: #000000;">26</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0b11010</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0o32</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0x1A</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0X1a</span><span style="color: #0000FF;">,</span><span style="color: #000000;">#1A</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0(16)1A</span><span style="color: #0000FF;">}</span> <span style="color: #000080;font-style:italic;">-- displays {26,26,26,26,26,26,26}</span> |
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<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%d == 0b%b == 0x%x\n"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">26</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- displays 26 == 0b11010 == 0x1A</span> |
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<lang Phix>-- demo\rosetta\Convert_base.exw |
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<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%d == o(62)%A\n"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">26</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">62</span><span style="color: #0000FF;">,</span><span style="color: #000000;">26</span><span style="color: #0000FF;">}})</span> <span style="color: #000080;font-style:italic;">-- displays 26 == 0(62)Q</span> |
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function to_base(integer i, integer base) |
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<span style="color: #0000FF;">?</span><span style="color: #7060A8;">to_number</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"1a"</span><span style="color: #0000FF;">,{},</span><span style="color: #000000;">16</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- displays 26</span> |
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integer c |
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<span style="color: #008080;">include</span> <span style="color: #004080;">mpfr</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span> |
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sequence s = "" |
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<span style="color: #004080;">mpfr</span> <span style="color: #000000;">f</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">mpfr_init</span><span style="color: #0000FF;">()</span> |
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while i>0 do |
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<span style="color: #7060A8;">mpfr_set_str</span><span style="color: #0000FF;">(</span><span style="color: #000000;">f</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"110.01"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">2</span><span style="color: #0000FF;">)</span> |
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c = remainder(i,base) |
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<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"0b%s == %s\n"</span><span style="color: #0000FF;">,{</span><span style="color: #7060A8;">mpfr_get_fixed</span><span style="color: #0000FF;">(</span><span style="color: #000000;">f</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">2</span><span style="color: #0000FF;">),</span><span style="color: #7060A8;">mpfr_get_fixed</span><span style="color: #0000FF;">(</span><span style="color: #000000;">f</span><span style="color: #0000FF;">)})</span> <span style="color: #000080;font-style:italic;">-- 0b110.01 == 6.25</span> |
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if c<10 then |
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<!--</lang>--> |
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c += '0' |
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else |
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c += 'a'-10 |
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<!--<lang Phix>(phixonline)--> |
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end if |
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<span style="color: #000080;font-style:italic;">-- demo\rosetta\Convert_base.exw</span> |
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s = prepend(s,c) |
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<span style="color: #008080;">function</span> <span style="color: #000000;">to_base</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">base</span><span style="color: #0000FF;">)</span> |
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i = floor(i/base) |
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<span style="color: #004080;">sequence</span> <span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">""</span> |
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end while |
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<span style="color: #008080;">while</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">></span><span style="color: #000000;">0</span> <span style="color: #008080;">do</span> |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">c</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">remainder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">i</span><span style="color: #0000FF;">,</span><span style="color: #000000;">base</span><span style="color: #0000FF;">)</span> |
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if length(s) = 0 then |
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<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">prepend</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span><span style="color: #000000;">c</span><span style="color: #0000FF;">+</span><span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">c</span><span style="color: #0000FF;"><</span><span style="color: #000000;">10</span><span style="color: #0000FF;">?</span><span style="color: #008000;">'0'</span><span style="color: #0000FF;">:</span><span style="color: #008000;">'a'</span><span style="color: #0000FF;">-</span><span style="color: #000000;">10</span><span style="color: #0000FF;">))</span> |
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s = "0" |
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<span style="color: #000000;">i</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">i</span><span style="color: #0000FF;">/</span><span style="color: #000000;">base</span><span style="color: #0000FF;">)</span> |
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end if |
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<span style="color: #008080;">end</span> <span style="color: #008080;">while</span> |
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<span style="color: #008080;">if</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span> <span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">"0"</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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return s |
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<span style="color: #008080;">return</span> <span style="color: #000000;">s</span> |
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end function |
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span> |
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function from_base(string s, integer base) |
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<span style="color: #008080;">function</span> <span style="color: #000000;">from_base</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">base</span><span style="color: #0000FF;">)</span> |
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integer res = 0, c |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">res</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span> |
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for i=1 to length(s) do |
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<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span> |
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c = s[i] |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">c</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> |
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if c>='0' and c<='9' then |
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<span style="color: #000000;">res</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">res</span><span style="color: #0000FF;">*</span><span style="color: #000000;">base</span><span style="color: #0000FF;">+(</span><span style="color: #000000;">c</span><span style="color: #0000FF;">-</span><span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">c</span><span style="color: #0000FF;"><=</span><span style="color: #008000;">'9'</span><span style="color: #0000FF;">?</span><span style="color: #008000;">'0'</span><span style="color: #0000FF;">:</span><span style="color: #008000;">'a'</span><span style="color: #0000FF;">-</span><span style="color: #000000;">10</span><span style="color: #0000FF;">))</span> |
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c -= '0' |
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<span style="color: #008080;">end</span> <span style="color: #008080;">for</span> |
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else |
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<span style="color: #008080;">return</span> <span style="color: #000000;">res</span> |
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c -= 'a'-10 |
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span> |
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end if |
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res = res*base+c |
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<span style="color: #0000FF;">?</span><span style="color: #000000;">to_base</span><span style="color: #0000FF;">(</span><span style="color: #000000;">256</span><span style="color: #0000FF;">,</span><span style="color: #000000;">16</span><span style="color: #0000FF;">)</span> |
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end for |
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<span style="color: #0000FF;">?</span><span style="color: #000000;">from_base</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"100"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">16</span><span style="color: #0000FF;">)</span> |
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return res |
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<!--</lang>--> |
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end function |
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?to_base(256,16) |
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?from_base("100",16)</lang> |
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{{out}} |
{{out}} |
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<pre> |
<pre> |