impl. multiply() function (almost same as numpy.multiply)

[t-hishinuma]

vector's multiply is difficult

[t-hishinuma]

and, We cant impl N*1 vector and 1*N vector multiply (output is N*N matrix ). It is needed transpose. This is serious program of our API.

[t-hishinuma]

I implement times function

vector (same as VML)

• times(x, y, z)
  • z[i] = x[i] * y[i]
• times(scalar, x, y)
  • y[i] = alpha * x[i]

matrix

• times(alpha, A, B)
  • B[i][j] = alpha * A[i][j]
• times_row(vec, A, B);
  • B[i][j] = A[i][j] * x[j]
• times_row(vec, A, num, B)
  • B[num][j] = A[num][j] * x[j]
• times_col(vec, A, B);
  • B[i][j] = A[i][j] * x[j]
• times_col(vec, A, num, B)
  • B[i][num] = A[i][num] * x[i]

[t-hishinuma]

What namespace do these functions belong to?

I plan to write these functions in the monolish::blas namespace