Mercurial > octave
changeset 24916:bddd9ecfa420 stable
Cosint: solved problem with -0i
Solved (in a brute force way) the error in the imaginary part of the
output when the input has negative real part and imaginary part set
to -0.
--
changed scripts/specfun/cosint.m
| author | Michele Ginesi <michele.ginesi@gmail.com> |
|---|---|
| date | Wed, 31 Jan 2018 17:10:22 +0100 |
| parents | c6cdacb1794e |
| children | 509e78c26e82 |
| files | scripts/specfun/cosint.m |
| diffstat | 1 files changed, 12 insertions(+), 2 deletions(-) [+] |
line wrap: on
line diff
--- a/scripts/specfun/cosint.m Fri Jan 26 10:43:52 2018 +0100 +++ b/scripts/specfun/cosint.m Wed Jan 31 17:10:22 2018 +0100 @@ -136,7 +136,9 @@ endwhile y(i_miss) = yy; - + flag_neg_zero_imag = ((real(x) < 0) & (imag(x) == 0) & ... + (signbit (imag (x)))); + y(flag_neg_zero_imag) = complex (real (y(flag_neg_zero_imag)), - pi); y = reshape (y, sz); endfunction @@ -188,7 +190,15 @@ %! -0.140981697886930412 + pi*1i]; %! assert (cosint (x), y_ex, -4*eps); -%!xtest +%!test +%! x = complex(-(1:4).', 0); +%! y_ex = [0.337403922900968135 + pi*1i +%! 0.422980828774864996 + pi*1i +%! 0.119629786008000328 + pi*1i +%! -0.140981697886930412 + pi*1i]; +%! assert (cosint (x), y_ex, -4*eps); + +%!test %! x = complex (-(1:4).', -0); %! y_ex = [0.337403922900968135 - pi*1i %! 0.422980828774864996 - pi*1i