Java Utililty Methods acos

double acos(double a)
Returns the arc cosine of an angle, in the range of 0.0 through pi.

return Math.acos(a);

double acos(double a)
Returns the arc cosine of an angle, in the range of 0 through pi.

double z, p, q, r, w, s, c, df;
long hx = Double.doubleToLongBits(a);
long ix = hx & no_sign_mask;
if (Math.abs(a) >= 1) {
 if (ix == one) {
 if (hx > 0)
 return (0.0);
 else
...

double acos(double d)
Wrapper implementation of Math.acos().

return Math.acos(d);

double acos(double x)
acos

double f = asin(x);
if (f == Double.NaN)
 return f;
return Math.PI / 2 - f;

double acos(double x)
acos

return PI_2 - arcsin(x);

float acos(final float a)
acos

return (float) java.lang.Math.acos(a);

float acos(float value)
acos

return (float) Math.acos(value);

float acos(float value)
acos

return (float) Math.acos(value);

float acos(float value)
acos

return (float) Math.acos(value);

float acos(float x)
Arccos

float f = asin(x);
if (Float.isNaN(f))
 return f;
return (float) Math.PI / 2 - f;