`scipy.linalg.lapack:_compute_lwork`

source: /scipy/linalg/lapack.py :1028

Signature

def _compute_lwork ( routine , * args , ** kwargs )

Summary

Round floating-point lwork returned by lapack to integer.

Extended Summary

Several LAPACK routines compute optimal values for LWORK, which they return in a floating-point variable. However, for large values of LWORK, single-precision floating point is not sufficient to hold the exact value --- some LAPACK versions (<= 3.5.0 at least) truncate the returned integer to single precision and in some cases this can be smaller than the required value.

Examples

from scipy.linalg import lapack
n = 5000
s_r, s_lw = lapack.get_lapack_funcs(('sysvx', 'sysvx_lwork'))
lwork = lapack._compute_lwork(s_lw, n)

✓

lwork

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Aliases

scipy.linalg._basic._compute_lwork