added floats.push() and floats.pop()

fixed vm pop.f

compiler/res/prog8lib/floats_functions.p8

@@ -215,4 +215,17 @@ sub clampf(float value, float minimum, float maximum) -> float {
     return minimum
 }
 
+inline asmsub push(float value @FAC1) {
+    %asm {{
+        jsr  floats.pushFAC1
+    }}
+}
+
+inline asmsub pop() -> float @FAC1 {
+    %asm {{
+        clc
+        jsr  floats.popFAC
+    }}
+}
+
 }

compiler/res/prog8lib/virtual/floats.p8

@@ -173,4 +173,19 @@ sub normalize(float value) -> float {
     return value
 }
 
+sub push(float value) {
+    %ir {{
+        loadm.f  fr65535,floats.push.value
+        push.f  fr65535
+        return
+    }}
+}
+
+sub pop() -> float {
+    %ir {{
+        pop.f  fr65535
+        returnr.f fr65535
+    }}
+}
+
 }

examples/test.p8

@@ -1,17 +1,17 @@
 %import textio
-;;%import floats
+%import floats
 %zeropage basicsafe
 
 main {
     sub start() {
         sys.push(11)
         sys.pushw(2222)
-        ;;floats.pushf(floats.π)
+        floats.push(floats.π)
         cx16.r2++
 
-        ;;float pi = floats.popf()
-        ;;floats.print_f(pi)
-        ;;txt.nl()
+        float pi = floats.pop()
+        floats.print_f(pi)
+        txt.nl()
 
         cx16.r1 = sys.popw()
         cx16.r0L = sys.pop()

virtualmachine/src/prog8/vm/VirtualMachine.kt

@@ -2406,10 +2406,10 @@ internal fun Stack<UByte>.popf(): Double {
     val bits = b7 +
             (1L shl 8)*b6 +
             (1L shl 16)*b5 +
-            (1L shl 24)*b4
-            (1L shl 32)*b3
-            (1L shl 40)*b2
-            (1L shl 48)*b1
+            (1L shl 24)*b4 +
+            (1L shl 32)*b3 +
+            (1L shl 40)*b2 +
+            (1L shl 48)*b1 +
             (1L shl 56)*b0
     return Double.fromBits(bits)
 }