Add a test

tests/float/tfloatrange.nim

@@ -0,0 +1,37 @@
+discard """
+  cmd: "nim c -d:release --rangeChecks:on $file"
+  output: '''StrictPositiveRange
+float
+range fail expected
+'''
+"""
+import math, fenv
+
+type
+  Positive = range[0.0..Inf]
+  StrictPositive = range[minimumPositiveValue(float)..Inf]
+  Negative32 = range[-maximumPositiveValue(float32) .. -1.0'f32]
+
+proc myoverload(x: float) =
+  echo "float"
+
+proc myoverload(x: Positive) =
+  echo "PositiveRange"
+
+proc myoverload(x: StrictPositive) =
+  echo "StrictPositiveRange"
+
+
+let x = 9.0.StrictPositive
+myoverload(x)
+myoverload(9.0)
+
+doAssert(sqrt(x) == 3.0)
+
+var z = -10.0
+try:
+  myoverload(StrictPositive(z))
+except:
+  echo "range fail expected"
+  
+