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| author | Mattias Andrée <maandree@kth.se> | 2017-06-10 10:48:21 +0200 |
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| committer | Mattias Andrée <maandree@kth.se> | 2017-06-10 10:48:21 +0200 |
| commit | 42ca750430bf40ba13493ac46028d22e6f3555b9 (patch) | |
| tree | 04324f1e954990175dc7922c46da26855a4b5a92 /libcolour_srgb_decode.3 | |
| parent | Reduce size of RGB struct, and add LIBCOLOUR_CIELCHUV.7 and LIBCOLOUR_RGB.7 (diff) | |
| download | libcolour-42ca750430bf40ba13493ac46028d22e6f3555b9.tar.gz libcolour-42ca750430bf40ba13493ac46028d22e6f3555b9.tar.bz2 libcolour-42ca750430bf40ba13493ac46028d22e6f3555b9.tar.xz | |
m + add libcolour_delta_e.3, libcolour_srgb_decode.3, and libcolour_srgb_encode.3
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'libcolour_srgb_decode.3')
| -rw-r--r-- | libcolour_srgb_decode.3 | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libcolour_srgb_decode.3 b/libcolour_srgb_decode.3 new file mode 100644 index 0000000..a04ee99 --- /dev/null +++ b/libcolour_srgb_decode.3 @@ -0,0 +1,35 @@ +.TH LIBCOLOUR_SRGB_DECODE 3 libcolour +.SH NAME +libcolour_srgb_decode - Unapply the sRGB transfer function +.SH SYNOPSIS +.nf +#include <libcolour.h> + +float \fBlibcolour_srgb_decode_f\fP(float \fIvalue\fP); +double \fBlibcolour_srgb_decode_lf\fP(double \fIvalue\fP); +long double \fBlibcolour_srgb_decode_llf\fP(long double \fIvalue\fP); + +#define \fBlibcolour_srgb_decode\fP(\fIvalue\fP)\\ + (_Generic((\fIvalue\fP),\\ + float: \fBlibcolour_srgb_decode_f\fP(\fIvalue\fP),\\ + double: \fBlibcolour_srgb_decode_lf\fP(\fIvalue\fP),\\ + long double: \fBlibcolour_srgb_decode_llf\fP(\fIvalue\fP))) +.fi +.SH DESCRIPTION +.B libcolour_srgb_decode +and its non-generic functions unapply the sRGB transfer +function to a +.IR value . +If +.I value +is negative, the transfer function is unapplied to the +absolute value of +.I value +and the negative of the result is returned. +.SH SEE ALSO +.BR libcolour (7), +.BR libcolour_srgb_encode (3), +.BR LIBCOLOUR_SRGB (7) +.SH AUTHORS +Mattias Andrée +.RI < maandree@kth.se > |