ref: ff204601124da81b70dfa97f3072eee8eebb99bb
parent: 64046d70836a316dd7ea1fc544cf5e30cb41b947
author: Ori Bernstein <[email protected]>
date: Tue Oct 29 07:29:02 EDT 2013
Add endian flipping functions.
These assume a little endian system.
--- a/libstd/Makefile
+++ b/libstd/Makefile
@@ -4,6 +4,7 @@
blat.myr \
chartype.myr \
die.myr \
+ endian.myr \
env.myr \
error.myr \
extremum.myr \
--- /dev/null
+++ b/libstd/endian.myr
@@ -1,0 +1,32 @@
+pkg std =
+ generic hosttonet : (v : @a -> @a)
+ generic nettohost : (v : @a -> @a)
+;;
+
+/* FIXME: we only support little endian platforms right now,
+ so we assume a little endian machine. FIX THIS. */
+generic hosttonet = {v : @a::(tcint,tcnum,tctest)+ var i
+ var ret
+
+ ret = 0
+ for i = 0; i < sizeof(@a); i++
+ ret <<= 8
+ ret |= v & 0xff
+ v >>= 8
+ ;;
+ -> ret
+}
+
+generic nettohost = {v : @a::(tcint,tcnum,tctest)+ var i
+ var ret
+
+ ret = 0
+ for i = 0; i < sizeof(@a); i++
+ ret <<= 8
+ ret |= v & 0xff
+ v >>= 8
+ ;;
+ -> ret
+}