69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
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u8g_u8toa.c
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Universal 8bit Graphics Library
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Copyright (c) 2011, olikraus@gmail.com
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or other
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materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "u8g.h"
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static const unsigned char u8g_u8toa_tab[3] = { 100, 10, 1 } ;
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const char *u8g_u8toap(char * dest, uint8_t v)
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{
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uint8_t pos;
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uint8_t d;
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uint8_t c;
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for( pos = 0; pos < 3; pos++ )
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{
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d = '0';
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c = *(u8g_u8toa_tab+pos);
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while( v >= c )
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{
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v -= c;
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d++;
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}
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dest[pos] = d;
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}
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dest[3] = '\0';
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return dest;
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}
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/* v = value, d = number of digits */
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const char *u8g_u8toa(uint8_t v, uint8_t d)
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{
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static char buf[4];
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d = 3-d;
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return u8g_u8toap(buf, v) + d;
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}
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