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-rw-r--r--doc/info/chap/clut-manipulation.texinfo6
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/info/chap/clut-manipulation.texinfo b/doc/info/chap/clut-manipulation.texinfo
index 7659992..453c14e 100644
--- a/doc/info/chap/clut-manipulation.texinfo
+++ b/doc/info/chap/clut-manipulation.texinfo
@@ -108,7 +108,8 @@ The brightness parameter for the blue curve.
@item libclut_linearise(clut, max, type, r, g, b)
Convert the curves from formatted in standard RGB to linear RGB.
-Requires linking with @option{-lclut}.
+Requires linking with @option{-lclut}, or @option{-lm} if
+@code{libclut_model_standard_to_linear1} is not undefined.
Parameters:
@table @code
@@ -124,7 +125,8 @@ Whether to convert the blue colour curve.
@item libclut_standardise(clut, max, type, r, g, b)
Convert the curves from formatted in linear RGB to standard RGB.
-Requires linking with @option{-lclut}.
+Requires linking with @option{-lclut}, or @option{-lm} if
+@code{libclut_model_linear_to_standard1} is not undefined.
Parameters:
@table @code