From 82384b4ec365f3d2ad2c9bca078a0b38d4be09c0 Mon Sep 17 00:00:00 2001 From: graehl Date: Wed, 11 Aug 2010 02:46:13 +0000 Subject: merge git-svn-id: https://ws10smt.googlecode.com/svn/trunk@511 ec762483-ff6d-05da-a07a-a48fb63a330f --- utils/swap_pod.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100755 utils/swap_pod.h (limited to 'utils/swap_pod.h') diff --git a/utils/swap_pod.h b/utils/swap_pod.h new file mode 100755 index 00000000..bb9a830d --- /dev/null +++ b/utils/swap_pod.h @@ -0,0 +1,23 @@ +#ifndef SWAP_POD_H +#define SWAP_POD_H + +//for swapping objects of the same concrete type where just swapping their bytes will work. will at least work on plain old data. + +#include // not used, but people who use this will want to bring std::swap in anyway +#include + +template +inline void swap_pod(T &a,T &b) { + using namespace std; + const unsigned s=sizeof(T); + char tmp[s]; + void *pt=(void*)tmp; + void *pa=(void*)&a; + void *pb=(void*)&b; + memcpy(pt,pa,s); + memcpy(pa,pb,s); + memcpy(pb,pt,s); +} + + +#endif -- cgit v1.2.3