Method: Vdsp::UnsafeDouble.vsmsma

Defined in:

ext/vdsp/vdsp.c

.vsmsma(a, a_offset, a_stride, b, c, c_offset, c_stride, d, e, e_offset, e_stride, n) ⇒ Object

e = (a * b) + (c * d)

# File 'ext/vdsp/vdsp.c', line 1827

VALUE rb_double_vsmsma(
  VALUE cls,
  VALUE a, VALUE a_offset, VALUE a_stride,
  VALUE b,
  VALUE c, VALUE c_offset, VALUE c_stride,
  VALUE d,
  VALUE e, VALUE e_offset, VALUE e_stride,
  VALUE n)
{
  VdspArrayParam _a;
  VdspArrayParam _c;
  VdspArrayParam _e;

  array_param(&_a, a, a_offset, a_stride);
  double _b = NUM2DBL(b);
  array_param(&_c, c, c_offset, c_stride);
  double _d = NUM2DBL(d);
  array_param(&_e, e, e_offset, e_stride);

  vDSP_Length _n = NUM2LONG(n);

  vDSP_vsmsmaD(
    _a.res0->v.d+_a.offset, _a.stride,
    &_b,
    _c.res0->v.d+_c.offset, _c.stride,
    &_d,
    _e.res0->v.d+_e.offset, _e.stride,
    _n);

  return e;
}