gentoo-overlay/app-text/tesseract/files/tesseract-4.00.00_alpha-isnan.patch

From beb564df82204078563bcbde4e569caac2f7a2ac Mon Sep 17 00:00:00 2001
From: Stefan Weil <sw@weilnetz.de>
Date: Tue, 22 Nov 2016 11:31:01 +0100
Subject: [PATCH] lstm: Fix compilation (undeclared 'isnan')

gcc report:

lstm/lstmrecognizer.cpp:608:47: error: 'isnan' was not declared in this scope
     ASSERT_HOST(!isnan(output.f(t)[null_char_]));

Signed-off-by: Stefan Weil <sw@weilnetz.de>
---
 lstm/lstmrecognizer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lstm/lstmrecognizer.cpp b/lstm/lstmrecognizer.cpp
index f648e16..babfe50 100644
--- a/lstm/lstmrecognizer.cpp
+++ b/lstm/lstmrecognizer.cpp
@@ -600,7 +600,7 @@ void LSTMRecognizer::LabelsViaThreshold(const NetworkIO& output,
     ++t;
   }
   while (t < width) {
-    ASSERT_HOST(!isnan(output.f(t)[null_char_]));
+    ASSERT_HOST(!std::isnan(output.f(t)[null_char_]));
     int label = output.BestLabel(t, null_char_, null_char_, NULL);
     int char_start = t++;
     while (t < width && !NullIsBest(output, null_thr, null_char_, t) &&