| 0,0 → 1,57 |
|---|
| <html> |
| <head> |
| <title>String to Double</title> |
| <meta http-equiv="content-type" content="text/html; charset=WINDOWS-1251"> |
| <style> |
| body |
| { |
| font-size: 15px; |
| font-family: "Bookman Old Style"; |
| color: black; |
| text-align: justify; |
| width: 750px; |
| } |
| h1 { |
| color: white; |
| background-color: 808080; |
| font-size: 25px; |
| text-align: center; |
| } |
| h2 { color: green; font-size: 21px; } |
| h3 { color: green; font-size: 19px; } |
| h4 { color: #803f00; font-size: 17px; } |
| i { color: #0099cc; } |
| b { color: #0099cc; } |
| p { |
| text-indent: 2em; |
| margin-top: 3px; |
| margin-bottom: 2px; |
| margin-left: 0px; |
| margin-right: 0px; |
| } |
| ol, ul, dl{ |
| margin-top: 3px; |
| margin-bottom: 2px; |
| } |
| </style> |
| </head> |
| <body> |
| <h1>String to Double 07.09.2011</h1> |
| <p>Ïðîãðàììà äëÿ ïðåîáðàçîâàíèÿ ÷èñåë èç ñòðîêè â ôîðìàò float, double, à òàêæå èç 10 èëè 16 ðè÷íîãî âî float.</p> |
| |
| <p>Ñäåëàíà íà îñíîâå ïðîãðàììû <b>hex2dec2bin</b> è ïðèìåðîâ èç ôàéëà list2_05.inc (àâòîð Êóëàêîâ Âëàäèìèð Ãåííàäüåâè÷ 24.05.2002), êîòîðûå <b>ChE</b> ïåðåäåëàë ñ 16 íà 32 áèòà íà àññåìáëåð fasm.</p> |
| <p>Ïðîãðàììà ïîçâîëÿåò ðåøàòü òàêèå çàäà÷è:</p> |
| <p>1) ÷èñëî â ñòðîêîâîì âèäå ïåðåâåñòè â 4 áàéòà (float) â ìàøèííûé âèä</p> |
| <p>2) ÷èñëî â ñòðîêîâîì âèäå ïåðåâåñòè â 8 áàéò (double) â ìàøèííûé âèä</p> |
| <p>3) ÷èñëî â ìàøèííîì âèäå (float) ïåðåâåñòè â ñòðîêîâûé âèä (5 çíàêîâ ïîñëå çàïÿòîé).</p> |
| |
| <h2>Ïðèìåð</h2> |
| <p>Ìû çíàåì ÷òî åñòü íåêîòîðîå ÷èñëî <b>float</b>, ñîõðàíåííîå â ìàøèííîì âèäå, íàïðèìåð <b>3fa00000</b>. ×òî áû óçíàòü êàê ýòî ÷èñëî áóäåò ñìîòðåòüñÿ â äåñÿòè÷íîì âèäå äåëàåì òàêèå äåéñòâèÿ:</p> |
| <p>1) âêëþ÷àåì îïöèþ <b>float(dec,hex) -> str</b>, |
| 2) ââîäèì òåêñò <b>0x3fa00000</b>, |
| 3) íàæèìàåì <b>Ââîä</b> (â àíãë. âåðñèè <b>Ok</b>).</p> |
| <p> ðåçóëüòàòå óçíàåì ÷òî ýòî ÷èñëî <b>1.25</b>:</p> |
| <img src="str_do_opt3.png"> |
| <p>Ðèñ. 1. Èñïîëüçîâàíèå îïöèè <b>float(dec,hex) -> str</b></p> |
| </body> |
| </html> |