public static void ApplySigmoidDerivative(AlignedArray value, AlignedArray grad)
{
Contracts.Assert(Compat(value));
Contracts.Assert(Compat(grad));
Contracts.Assert(value.Size == grad.Size);
unsafe
{
fixed(float *pvalue = &value.Items[0])
fixed(float *pgrad = &grad.Items[0])
Thunk.ApplySigmoidDerivativeX(Ptr(value, pvalue), Ptr(grad, pgrad), grad.Size);
}
}