75 lines
1.9 KiB
C
Executable file
75 lines
1.9 KiB
C
Executable file
/* Audio Library for Teensy 3.X
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* Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
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*
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* Development of this audio library was funded by PJRC.COM, LLC by sales of
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* Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
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* open source software by purchasing Teensy or other PJRC products.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice, development funding notice, and this permission
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* notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "sqrt_integer.h"
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const uint16_t sqrt_integer_guess_table[33] = {
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55109,
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38968,
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27555,
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19484,
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13778,
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9742,
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6889,
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4871,
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3445,
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2436,
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1723,
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1218,
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862,
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609,
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431,
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305,
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216,
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153,
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108,
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77,
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54,
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39,
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27,
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20,
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14,
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10,
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7,
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5,
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4,
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3,
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2,
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1,
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0
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};
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/*
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#! /usr/bin/perl
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use POSIX;
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print "const uint16_t sqrt_integer_guess_table[33] = {\n";
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for ($i=0; $i <= 32; $i++) {
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printf "%5d", ceil(sqrt((0xFFFFFFFF >> $i) * sqrt(2)/2 ));
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print "," if $i < 32;
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print "\n";
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}
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print "};\n";
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*/
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