1 | /*
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2 | dtostrf - Emulation for dtostrf function from avr-libc
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3 | Copyright (c) 2013 Arduino. All rights reserved.
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4 | Written by Cristian Maglie <c.maglie@bug.st>
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5 |
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6 | This library is free software; you can redistribute it and/or
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7 | modify it under the terms of the GNU Lesser General Public
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8 | License as published by the Free Software Foundation; either
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9 | version 2.1 of the License, or (at your option) any later version.
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10 |
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11 | This library is distributed in the hope that it will be useful,
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | Lesser General Public License for more details.
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15 |
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16 | You should have received a copy of the GNU Lesser General Public
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17 | License along with this library; if not, write to the Free Software
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18 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 | */
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20 |
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21 | char *dtostrf (double val, signed char width, unsigned char prec, char *sout) {
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22 | asm(".global _printf_float");
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23 | char fmt[20];
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24 | sprintf(fmt, "%%%d.%df", width, prec);
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25 | sprintf(sout, fmt, val);
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26 | return sout;
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27 | }
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28 |
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