sqrt
Returns the square root of its argument.
Format
#include <math.h> double sqrt (double
x
);
Argument
x
A real number.
Description
The argument and the returned value are both objects of type double.
Return Values
val
The square root of
x
, if
x
is nonnegative.
0
Indicates that
x
is negative; errno is set to EDOM.
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