X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=include%2Fbyteswap.h;h=8689cd5752cccc96b412018a3fdcd1c087663642;hb=9a470b0a6eb85f8105155881fbd67f26a804f994;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/include/byteswap.h b/include/byteswap.h
index e69de29b..8689cd57 100644
--- a/include/byteswap.h
+++ b/include/byteswap.h
@@ -0,0 +1,34 @@
+#ifndef _BYTESWAP_H
+#define _BYTESWAP_H
+
+#include <stdint.h>
+
+#if __STDC_VERSION__ >= 199901L
+inline
+#endif
+static uint16_t __bswap_16(uint16_t __x)
+{
+	return __x<<8 | __x>>8;
+}
+
+#if __STDC_VERSION__ >= 199901L
+inline
+#endif
+static uint32_t __bswap_32(uint32_t __x)
+{
+	return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24;
+}
+
+#if __STDC_VERSION__ >= 199901L
+inline
+#endif
+static uint64_t __bswap_64(uint64_t __x)
+{
+	return __bswap_32(__x)+0ULL<<32 | __bswap_32(__x>>32);
+}
+
+#define bswap_16(x) __bswap_16(x)
+#define bswap_32(x) __bswap_32(x)
+#define bswap_64(x) __bswap_64(x)
+
+#endif