mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-10-03 18:09:02 -04:00
82 lines
1.3 KiB
C++
82 lines
1.3 KiB
C++
//
|
|
// FILE: bigFactorial.ino
|
|
// AUTHOR: Rob Tillaart
|
|
// PURPOSE: demo
|
|
// DATE: 2021-08-05
|
|
// URL: https://github.com/RobTillaart/statHelpers
|
|
|
|
|
|
#include "statHelpers.h"
|
|
#include "printHelpers.h" // to print large numbers....
|
|
|
|
|
|
uint32_t start, duration1, duration2, duration3;
|
|
|
|
|
|
void setup()
|
|
{
|
|
Serial.begin(115200);
|
|
Serial.println(__FILE__);
|
|
|
|
uint32_t m = 10000001;
|
|
double mant = 0;
|
|
uint32_t expo = 0;
|
|
|
|
for (uint32_t i = 1; i < m; i *= 10)
|
|
{
|
|
start = millis();
|
|
bigFactorial(i, mant, expo);
|
|
duration1 = millis() - start;
|
|
Serial.print(i);
|
|
Serial.print('\t');
|
|
Serial.print(mant, 5);
|
|
Serial.print('e');
|
|
Serial.print(expo);
|
|
Serial.print('\t');
|
|
Serial.print(duration1);
|
|
Serial.println();
|
|
}
|
|
Serial.println("-----");
|
|
Serial.println();
|
|
|
|
m = 5;
|
|
mant = 0;
|
|
expo = 0;
|
|
double f = 24;
|
|
bool flag = false;
|
|
while (flag == false)
|
|
{
|
|
f *= m++;
|
|
while (f > 10)
|
|
{
|
|
f /= 10;
|
|
expo++;
|
|
if (expo > 0xFFFFFFF0)
|
|
{
|
|
flag = true;
|
|
}
|
|
}
|
|
}
|
|
mant = f;
|
|
|
|
Serial.println();
|
|
Serial.print(m);
|
|
Serial.print('\t');
|
|
Serial.print(mant, 15);
|
|
Serial.print('e');
|
|
Serial.print(expo);
|
|
Serial.println();
|
|
|
|
|
|
Serial.println("\n Done...");
|
|
}
|
|
|
|
|
|
void loop()
|
|
{
|
|
}
|
|
|
|
|
|
// -- END OF FILE --
|
|
|