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| 5 | <title>binary.pro (SAXO Documentation Assistant)</title> |
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| 48 | <a href=""><img src="./../../prev.gif" border="0" alt="Previous"></a></td> |
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| 49 | <td width="80%" align="center" valign="center"> |
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| 50 | <font size=-1><i>SAXO Documentation Assistant</i>: <a href="./../../home.html">Overview</a></font></td> |
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| 51 | <td width="10%" align="right"> |
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| 52 | <a href="changeread.html"><img src="./../../next.gif" border="0" alt="Next"></a></td> |
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| 53 | </tr> |
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| 54 | </table> |
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| 55 | |
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| 56 | |
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| 57 | <h1><font size="-2">ToBeReviewed/LECTURE/</font></h1> |
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| 58 | <h2>binary.pro</h2> |
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| 59 | |
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| 60 | <dl> |
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| 61 | </dl> |
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| 62 | |
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| 63 | |
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| 64 | Returns the binary representation of a number of any numerical type. |
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| 65 | |
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| 66 | |
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| 67 | |
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| 68 | |
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| 69 | |
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| 70 | <a name="#_binary"></a> |
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| 71 | |
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| 72 | <h2>binary </h2> |
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| 73 | |
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| 74 | <p><font face="Courier"><i>result = </i>binary(<i><a href="#_binary_keyword_number">number</a></i>)</font></p> |
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| 75 | |
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| 78 | |
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| 79 | <h3>Return value</h3> |
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| 80 | Byte array with binary representation of numbers. |
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| 81 | |
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| 82 | |
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| 83 | |
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| 84 | <h3>Parameters</h3> |
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| 85 | |
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| 86 | |
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| 87 | <a name="#_binary_keyword_number"></a> |
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| 88 | <h4>number |
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| 89 | <font size="-1" color="#006633">in</font> |
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| 90 | |
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| 91 | |
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| 92 | <font size="-1" color="#006633">required</font> |
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| 93 | |
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| 95 | |
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| 96 | |
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| 97 | </h4> |
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| 98 | |
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| 99 | |
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| 100 | scalar or array of numbers (any numerical type) |
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| 106 | |
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| 107 | <h3>Examples</h3><pre> |
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| 108 | |
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| 109 | Binary representation of 11b: |
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| 110 | IDL> print, binary(11b) |
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| 111 | 0 0 0 0 1 0 1 1 |
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| 112 | |
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| 113 | Binary representation of pi (x86: Little-endian IEEE representation): |
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| 114 | IDL> print, format='(z9.8,5x,4(1x,8i1))', long(!pi,0), binary(!pi) |
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| 115 | 40490fdb 01000000 01001001 00001111 11011011 (x86 Linux) |
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| 116 | 0fdb4149 00001111 11011011 01000001 01001001 (Alpha OpenVMS) |
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| 117 | IDL> print, format='(8(1x,8i0))', binary(!dpi) |
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| 118 | 01000000 00001001 00100001 11111011 01010100 01000100 00101101 00011000 |
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| 119 | |
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| 120 | Some first tests before type double was added: |
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| 121 | IDL> print, format='(2a6,4x,2z9.8,4x,8z3.2)', $ |
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| 122 | !version.arch, !version.os, long(!dpi,0,2), byte(!dpi,0,8) |
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| 123 | x86 linux 54442d18 400921fb 18 2d 44 54 fb 21 09 40 |
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| 124 | sparc sunos 400921fb 54442d18 40 09 21 fb 54 44 2d 18 |
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| 125 | alpha vms 0fda4149 68c0a221 49 41 da 0f 21 a2 c0 68 |
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| 126 | (Beginning with IDL 5.1, Alpha VMS uses IEEE representation as well.) |
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| 127 | |
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| 128 | </pre><h3>Version history</h3> |
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| 129 | |
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| 130 | <h4>Version</h4> |
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| 131 | $Id: binary.pro 371 2008-08-07 09:32:02Z pinsard $ |
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| 132 | |
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| 133 | <h4>History</h4> |
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| 134 | 19 Dec 1997 Originally a news posting by David Fanning. |
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| 135 | (Re: bits from bytes) |
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| 136 | 20 Dec 1997 "Complete" rewrite: eliminate loops. |
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| 137 | 22 Dec 1997 Bit shift instead of exponentiation, return byte |
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| 138 | array, handle input arrays. |
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| 139 | Think about double and complex types. |
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| 140 | 22 Sep 1998 Complete rewrite: reduce every numerical type to |
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| 141 | single bytes. Check that big and little endian machines |
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| 142 | return exactly the same results (if IEEE). |
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| 143 | 7 May 2003 Added newish data types, unsigned and long64. BT |
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| 167 | <p><font color="gray" size="-3"> Produced by IDLdoc 2.0.</font></p> |
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