diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/info/chap/colour-spaces.texinfo | 13 | ||||
| -rw-r--r-- | doc/info/chap/functions.texinfo | 6 |
2 files changed, 5 insertions, 14 deletions
diff --git a/doc/info/chap/colour-spaces.texinfo b/doc/info/chap/colour-spaces.texinfo index eb26ba0..a214feb 100644 --- a/doc/info/chap/colour-spaces.texinfo +++ b/doc/info/chap/colour-spaces.texinfo @@ -403,21 +403,8 @@ function is available for your use: @table @code @item double libcolour_srgb_encode(double x) Applies the sRGB transfer function. -It's full code is -@example -return x <= 0.0031306684425217108 - ? 12.92 * x - : 1.055 * pow(x, 1 / 2.4) - 0.055; -@end example - @item double libcolour_srgb_decode(double x) Unapplies the sRGB transfer function. -It's full code is -@example -return x <= 0.040448236277380506 - ? x / 12.92 - : pow((x + 0.055) / 1.055, 2.4); -@end example @end table diff --git a/doc/info/chap/functions.texinfo b/doc/info/chap/functions.texinfo index b47a584..9ddefdf 100644 --- a/doc/info/chap/functions.texinfo +++ b/doc/info/chap/functions.texinfo @@ -18,7 +18,11 @@ Described in @ref{sRGB}. @item int libcolour_delta_e(const libcolour_colour_t*, const libcolour_colour_t*, double*) Calculates the @math{\Delta E^*_{ab}} distance -(the distance in CIE L*a*b*) of two colours. +(the distance in CIE L*a*b*) of two colours, +and outputs it to the last parameter. +Returns 0 on success and @math{-1} one error. +This function fails if and only if +@code{libcolour_convert} fails. @item int libcolour_proper(libcolour_colour_t*) Sets any member or submember that may be |