Method

NumCosmoMathMatrixsym_posdef_log

Declaration [src] 

void
ncm_matrix_sym_posdef_log (
  NcmMatrix* cm,
  gchar UL,
  NcmMatrix* ln_cm
)

Description [src]

Assuming that cm is a symmetric matrix with data on UL side, computes the matrix logarithm of cm.

Parameters

UL

Type: gchar

Char indicating ‘U’pper or ‘L’ower matrix.

ln_cm

Type: NcmMatrix

On exit this matrix contain the upper triangular matrix $U$ where $\exp(M) = U^\intercal U$.

The data is owned by the caller of the method.