X-Git-Url: https://oss.titaniummirror.com/gitweb/?p=tinyos-2.x.git;a=blobdiff_plain;f=tos%2Fchips%2Fmsp430%2Fmsp430hardware.h;h=e5406c5b1e93e691345e7a135c97d759d8658705;hp=e0d9cbac33096f04a3e01bf87254d6791db5e223;hb=e9bfab607e051bae6afb47b44892ce37541d1b44;hpb=adf1de6c009d13b7b52e68535c63b28f59c97400

diff --git a/tos/chips/msp430/msp430hardware.h b/tos/chips/msp430/msp430hardware.h
index e0d9cbac..e5406c5b 100644
--- a/tos/chips/msp430/msp430hardware.h
+++ b/tos/chips/msp430/msp430hardware.h
@@ -220,7 +220,7 @@ void __nesc_atomic_end(__nesc_atomic_t reenable_interrupts);
 
 #ifndef NESC_BUILD_BINARY
 /* @spontaneous() functions should not be included when NESC_BUILD_BINARY
-   is #defined, to avoid duplicate functions definitions wheb binary
+   is #defined, to avoid duplicate functions definitions when binary
    components are used. Such functions do need a prototype in all cases,
    though. */
 __nesc_atomic_t __nesc_atomic_start(void) @spontaneous() @safe()
@@ -239,5 +239,24 @@ void __nesc_atomic_end(__nesc_atomic_t reenable_interrupts) @spontaneous() @safe
 }
 #endif
 
+/* Floating-point network-type support.
+   These functions must convert to/from a 32-bit big-endian integer that follows
+   the layout of Java's java.lang.float.floatToRawIntBits method.
+   Conveniently, for the MSP430 family, this is a straight byte copy...
+*/
+
+typedef float nx_float __attribute__((nx_base_be(afloat)));
+
+inline float __nesc_ntoh_afloat(const void *COUNT(sizeof(float)) source) @safe() {
+  float f;
+  memcpy(&f, source, sizeof(float));
+  return f;
+}
+
+inline float __nesc_hton_afloat(void *COUNT(sizeof(float)) target, float value) @safe() {
+  memcpy(target, &value, sizeof(float));
+  return value;
+}
+
 #endif//_H_msp430hardware_h