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improve docs

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This commit is contained in:
John Cupitt 2016-07-08 09:15:56 +01:00
parent 3130b9b118
commit 0f2d1a6b0b
1 changed files with 2 additions and 1 deletions
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libvips/create/buildlut.c
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@ -277,7 +277,8 @@ vips_buildlut_init( VipsBuildlut *lut )
* @...: %NULL-terminated list of optional named arguments
*
* This operation builds a lookup table from a set of points. Intermediate
* values are generated by piecewise linear interpolation.
* values are generated by piecewise linear interpolation. The lookup table is
* always of type %gdouble, use vips_cast() to change it to the type you need.
*
* For example, consider this 2 x 2 matrix of (x, y) coordinates:
*