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50 lines
928 B
C
50 lines
928 B
C
#pragma once
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//
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// FILE: FastTrig.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.10
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// PURPOSE: Arduino library for a faster approximation of sin() and cos()
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// DATE: 2011-08-18
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// URL: https://github.com/RobTillaart/FastTrig
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// https://forum.arduino.cc/index.php?topic=69723.0
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#include "Arduino.h"
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#define FAST_TRIG_LIB_VERSION (F("0.1.10"))
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extern uint16_t isinTable16[];
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extern uint8_t isinTable8[];
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///////////////////////////////////////////////////////
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//
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// GONIO LOOKUP
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//
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float isin(float f);
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float icos(float x);
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float itan(float f);
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// some problem at 0 but at least we have a icot(x) cotangent.
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float icot(float f);
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// missing function...
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// float cot(float f);
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///////////////////////////////////////////////////////
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//
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// INVERSE GONIO LOOKUP
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//
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float iasin(float f);
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float iacos(float f);
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// PLACEHOLDER no good implementation
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float iatan(float f);
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// -- END OF FILE --
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