text: #ifdef __cplusplus
  extern "C" { 
  #endif  
  
  #include "f2c.h" 
  
  int zgemm_(char *transa, char *transb, integer *m, integer *n, integer *k, doublecomplex *alpha, doublecomplex *a, integer *lda, doublecomplex *b, integer *ldb, doublecomplex *beta, doublecomplex *c__, integer *ldc);
  
  #ifdef __cplusplus
  }
  #endif