pub unsafe extern fn dtfsm_(transr: *const c_char,
side: *const c_char,
uplo: *const c_char,
trans: *const c_char,
diag: *const c_char,
m: *const lapack_int,
n: *const lapack_int,
alpha: *const c_double,
a: *const c_double,
b: *mut c_double,
ldb: *const lapack_int)