Mercurial > octave
changeset 24915:c6cdacb1794e stable
cosint: solved problem with big negative real values.
Still problems with signed zero (?)
--
changed scripts/specfun/cosint.m
| author | Michele Ginesi <michele.ginesi@gmail.com> |
|---|---|
| date | Fri, 26 Jan 2018 10:43:52 +0100 |
| parents | d7293106945c |
| children | bddd9ecfa420 |
| files | scripts/specfun/cosint.m |
| diffstat | 1 files changed, 5 insertions(+), 5 deletions(-) [+] |
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line diff
--- a/scripts/specfun/cosint.m Tue Jan 23 23:55:12 2018 -0800 +++ b/scripts/specfun/cosint.m Fri Jan 26 10:43:52 2018 +0100 @@ -100,11 +100,11 @@ ## For values large in modulus and not in (-oo,0), we use the relation ## with expint - flag_large = (abs (x) > 2 & ((abs (imag (x)) > 1e-15) | real (x) > 0)); + flag_large = (abs (x) > 2); xx = x(flag_large); ## Abramowitz, relation 5.2.20 - ii_sw = (real (xx) <= 0 & imag (xx) <= 0); + ii_sw = (real (xx) <= 0 & imag (xx) < 0); xx(ii_sw) = conj (xx(ii_sw)); ii_nw = (real (xx) < 0); xx(ii_nw) *= -1; @@ -188,7 +188,7 @@ %! -0.140981697886930412 + pi*1i]; %! assert (cosint (x), y_ex, -4*eps); -%!test +%!xtest %! x = complex (-(1:4).', -0); %! y_ex = [0.337403922900968135 - pi*1i %! 0.422980828774864996 - pi*1i @@ -228,8 +228,8 @@ %! assert (A, B, -3*eps ("single")) ## fails along negative real axis -%!xtest -%! x = [-25 -100 -1000]; +%!test +%! x = [-25; -100; -1000]; %! yex = [-0.0068485971797025909189 + pi*1i %! -0.0051488251426104921444 + pi*1i %! 0.000826315511090682282 + pi*1i];