Function sgtcon_

Estimates the reciprocal of the condition number of a general tridiagonal matrix, in either the 1-norm or the infinity-norm, using the LU factorization computed by SGTTRF.

extern(C) void sgtcon_ (
  char* norm,
  int* n,
  float* dl,
  float* d,
  float* du,
  float* du2,
  int* ipiv,
  float* anorm,
  float* rcond,
  float* work,
  int* iwork,
  int* info,
  int norm_len
);