fnvacos_f32void vacos_f32(const float * in, float * out, int n)sourceeditSingle-precision elementwise arccosine.Computes outi=arccos(ini)\text{out}_i = \arccos(\text{in}_i)outi=arccos(ini) via vvacosf. Outputs in [0,π][0, \pi][0,π]. References Accelerate.framework vvacosf.Parametersinconst float*Input buffer in [−1,1][-1, 1][−1,1].outfloat*Output buffer (radians).nstd::size_tElement count.