fixes, more trig, demo with floats

crsn/src/asm/data/rd.rs

@@ -24,15 +24,18 @@ impl Rd {
         Rd(RdData::Immediate(val.to_bits()))
     }
 
-    /// Convert immediate read to float
+    /// Convert immediate integer to float
     pub fn imm_to_float(self) -> Rd {
-        match self {
-            Rd(RdData::Immediate(v)) => {
-                let signed : i64 = unsafe { std::mem::transmute(v) };
-                Rd::new_float(signed as f64)
-            }
-            other => other
-        }
+        self
+
+        // FIXME
+        // match self {
+        //     Rd(RdData::Immediate(v)) => {
+        //         let signed : i64 = unsafe { std::mem::transmute(v) };
+        //         Rd::new_float(signed as f64)
+        //     }
+        //     other => other
+        // }
     }
 
     pub fn is_imm_equal(self, other: Value) -> bool {

crsn/src/runtime/frame/status.rs

@@ -4,6 +4,7 @@ use std::fmt;
 use crate::asm::data::literal::{is_negative, is_positive, Value};
 use crate::asm::instr::Cond;
 use crate::asm::instr::cond::Flag;
+use num_traits::Zero;
 
 #[derive(Default, Clone, Debug)]
 pub struct StatusFlags {
@@ -80,9 +81,11 @@ impl StatusFlags {
 
     #[inline(always)]
     pub fn update_float(&mut self, val: f64) {
-        self.zero = val == 0.0;
-        self.positive = val > 0.0;
-        self.negative = val < 0.0;
+        self.invalid = val.is_nan();
+        self.overflow = val.is_infinite();
+        self.zero = val.is_zero();
+        self.positive = val.is_sign_positive();
+        self.negative = val.is_sign_negative();
     }
 
     #[inline(always)]