38 lines
872 B
Diff
38 lines
872 B
Diff
From b0e1c25dd1d065200c8d8f59ad0afe014861a1b9 Mon Sep 17 00:00:00 2001
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From: Su_Laus <sulau@freenet.de>
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Date: Thu, 16 Feb 2023 12:03:16 +0100
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Subject: [PATCH] tif_luv: Check and correct for NaN data in uv_encode().
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Closes #530
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See merge request !473
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Reference:https://gitlab.com/libtiff/libtiff/-/merge_requests/473/diffs
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Conflict:Adaptation Context
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---
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libtiff/tif_luv.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/libtiff/tif_luv.c b/libtiff/tif_luv.c
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index 13765ea..e511a46 100644
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--- a/libtiff/tif_luv.c
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+++ b/libtiff/tif_luv.c
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@@ -908,6 +908,13 @@ uv_encode(double u, double v, int em) /* encode (u',v') coordinates */
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{
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register int vi, ui;
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+ /* check for NaN */
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+ if (u != u || v != v)
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+ {
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+ u = U_NEU;
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+ v = V_NEU;
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+ }
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+
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if (v < UV_VSTART)
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return oog_encode(u, v);
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vi = tiff_itrunc((v - UV_VSTART)*(1./UV_SQSIZ), em);
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--
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2.27.0
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