imsl 计算出现错误 求助
在求线性方程的时候用到了imsl 的imsl_d_lin_sol_gen_band,但是在计算的过程中出现了下面的warning 和 error
*** WARNING Error IMSL_ILL_CONDITIONED from imsl_d_lin_sol_gen_band. The
*** matrix is too ill-conditioned. An estimate of the reciprocal of
*** its L1 condition number is "rcond" = 1.069255e-264. The solution
*** might not be accurate.
*** FATAL Error IMSL_SINGULAR_MATRIX from imsl_d_lin_sol_gen_band. The
*** input matrix is singular.
这是在反复迭代后出现的,还没有完成迭代次数,就出现错误跳出了,真是什么错误呢?