diff options
Diffstat (limited to 'Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx')
-rw-r--r-- | Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx b/Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx index a488af6..458ed63 100644 --- a/Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx +++ b/Tests/Tutorial/Step5/MathFunctions/mysqrt.cxx @@ -10,10 +10,9 @@ // a hack square root calculation using simple operations double mysqrt(double x) { - if (x <= 0) - { + if (x <= 0) { return 0; - } + } double result; @@ -22,23 +21,20 @@ double mysqrt(double x) // use the table to help find an initial value result = x; - if (x >= 1 && x < 10) - { + if (x >= 1 && x < 10) { result = sqrtTable[static_cast<int>(x)]; - } + } // do ten iterations int i; - for (i = 0; i < 10; ++i) - { - if (result <= 0) - { + for (i = 0; i < 10; ++i) { + if (result <= 0) { result = 0.1; - } - delta = x - (result*result); - result = result + 0.5*delta/result; - fprintf(stdout,"Computing sqrt of %g to be %g\n",x,result); } + delta = x - (result * result); + result = result + 0.5 * delta / result; + fprintf(stdout, "Computing sqrt of %g to be %g\n", x, result); + } return result; } |