From 6a97e6c9e78a226abf4342d9b72bf1cc0235d775 Mon Sep 17 00:00:00 2001
From: Ulrich Bauer <mail@ulrich-bauer.org>
Date: Sun, 24 Nov 2019 18:02:40 +0100
Subject: endian conversion for binary read

---
 ripser.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'ripser.cpp')

diff --git a/ripser.cpp b/ripser.cpp
index 1ae62e1..59bd8ac 100644
--- a/ripser.cpp
+++ b/ripser.cpp
@@ -830,10 +830,15 @@ enum file_format {
 	BINARY
 };
 
+static const uint16_t endian_check(0xff00);
+static const bool is_big_endian = *reinterpret_cast<const uint8_t*>(&endian_check);
+
 template <typename T> T read(std::istream& input_stream) {
 	T result;
-	input_stream.read(reinterpret_cast<char*>(&result), sizeof(T));
-	return result; // on little endian: boost::endian::little_to_native(result);
+	char* p = reinterpret_cast<char*>(&result);
+	input_stream.read(p, sizeof(T));
+	if (is_big_endian) std::reverse(p, p + sizeof(T));
+	return result;
 }
 
 compressed_lower_distance_matrix read_point_cloud(std::istream& input_stream) {
-- 
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