Function ssyevr_
Computes selected eigenvalues, and optionally, eigenvectors of a real symmetric matrix. Eigenvalues are computed by the dqds algorithm, and eigenvectors are computed from various "good" LDL^T representations (also known as Relatively Robust Representations).
extern(C) void ssyevr_
(
char* jobz,
char* range,
char* uplo,
int* n,
float* a,
int* lda,
float* vl,
float* vu,
int* il,
int* iu,
float* abstol,
int* m,
float* w,
float* z,
int* ldz,
int* isuppz,
float* work,
int* lwork,
int* iwork,
int* liwork,
int* info,
int jobz_len,
int range_len,
int uplo_len
);