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Diffstat (limited to 'Tests/Tutorial/Step6/MathFunctions/mysqrt.cxx')
-rw-r--r-- | Tests/Tutorial/Step6/MathFunctions/mysqrt.cxx | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/Tests/Tutorial/Step6/MathFunctions/mysqrt.cxx b/Tests/Tutorial/Step6/MathFunctions/mysqrt.cxx deleted file mode 100644 index b9ad20a84..000000000 --- a/Tests/Tutorial/Step6/MathFunctions/mysqrt.cxx +++ /dev/null @@ -1,33 +0,0 @@ -#include "MathFunctions.h" -#include "TutorialConfig.h" -#include <iostream> - -#include <cmath> - -// a hack square root calculation using simple operations -double mysqrt(double x) -{ - if (x <= 0) { - return 0; - } - - // if we have both log and exp then use them -#if defined(HAVE_LOG) && defined(HAVE_EXP) - double result = exp(log(x) * 0.5); - std::cout << "Computing sqrt of " << x << " to be " << result << " using log" - << std::endl; -#else - double result = x; - - // do ten iterations - for (int i = 0; i < 10; ++i) { - if (result <= 0) { - result = 0.1; - } - double delta = x - (result * result); - result = result + 0.5 * delta / result; - std::cout << "Computing sqrt of " << x << " to be " << result << std::endl; - } -#endif - return result; -} |