Returns the non-negative square root of x
.
Remember to link the math library: valac -X -lm ...
It fails and sets GLib.errno to EDOM, if x
is
negative.
Example: Square root (float):
public static int main (string[] args) {
// /----
// sqrtf (4f) = \/ 4 = 2
//
// Output: ``sqrtf (4.0f) = 2.000000f``
float res = Math.sqrtf (4.0f);
print ("sqrtf (4.0f) = %lff\n", res);
return 0;
}
valac --pkg glib-2.0 -X -lm GLib.Math.sqrtf.vala
x |
A numeric value. |