36cf8a1eb9
Unit tests for the square root of "-25" currently fail when USE_MYMATH is disabled. The "mysqrt" method in the tutorials, returns "0" for a negative value, while "sqrt" returns "NaN", and therefore the output is not accepted by the test. This patch checks if the number is negative and eventually returns "0" before calling "sqrt" or "mysqrt" to fix this issue. Printing a NaN might cause issues with the string catched by the tests on some platform. Therefore assume that "0" is correct and "fix" the USE_MYMATH=OFF version by checking if the number is negative and eventually returning "0" before calling "sqrt" or "mysqrt".
39 lines
769 B
C++
39 lines
769 B
C++
// A simple program that computes the square root of a number
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
#include "TutorialConfig.h"
|
|
|
|
#ifdef USE_MYMATH
|
|
#include "MathFunctions.h"
|
|
#endif
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
if (argc < 2)
|
|
{
|
|
fprintf(stdout,"%s Version %d.%d\n",
|
|
argv[0],
|
|
Tutorial_VERSION_MAJOR,
|
|
Tutorial_VERSION_MINOR);
|
|
fprintf(stdout,"Usage: %s number\n",argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
double inputValue = atof(argv[1]);
|
|
double outputValue = 0;
|
|
|
|
if(inputValue >= 0)
|
|
{
|
|
#ifdef USE_MYMATH
|
|
outputValue = mysqrt(inputValue);
|
|
#else
|
|
outputValue = sqrt(inputValue);
|
|
#endif
|
|
}
|
|
|
|
fprintf(stdout,"The square root of %g is %g\n",
|
|
inputValue, outputValue);
|
|
return 0;
|
|
}
|