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70 lines
1.3 KiB
C++
70 lines
1.3 KiB
C++
//
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// FILE: fastMapDouble.ino
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// AUTHOR: Rob Tillaart
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// PURPOSE: demo of FastMapDouble class
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// DATE: 2020-07-04
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// URL: https://github.com/RobTillaart/FastMap
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// Note: the mapping used in the example cannot be done
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// with the normal map function.
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#include "FastMap.h"
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#include "printHelpers.h" // https://github.com/RobTillaart/printHelpers
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uint32_t start, stop;
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volatile double x;
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FastMapDouble mapper;
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void setup()
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{
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Serial.begin(115200);
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Serial.println(__FILE__);
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Serial.print("lib version: ");
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Serial.println(FASTMAP_LIB_VERSION);
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Serial.println();
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// Get a non optimizable value;
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volatile double pie = PI;
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// FASTMAP
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// map 0 .. 100% to lightspeed in km/hr
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mapper.init(0, 100, 0, 1.0792528488E+12);
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start = micros();
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for (int i = 0; i < 10000; i++)
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{
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x = mapper.map(pie);
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}
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stop = micros();
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Serial.print("10000 calls map:\t");
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Serial.print(pie, 5);
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Serial.print(" -> ");
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Serial.println(sci(x, 5));
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Serial.print(" time:\t");
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Serial.println(stop - start);
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Serial.println();
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Serial.println("PERC\tSpeed in Km/h");
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for (float p = 80; p < 100; p += 0.25)
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{
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x = mapper.map(p);
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Serial.print(p, 2);
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Serial.print('\t');
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Serial.print(sci(x, 4));
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Serial.println();
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}
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Serial.println("\nDone...");
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}
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void loop()
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{
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}
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// -- END OF FILE --
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