Added missing functions and prototypes

docs/api/scheme/inexact.md

@@ -9,17 +9,59 @@ For more information see the [R<sup>7</sup>RS Scheme Specification](../../r7rs.p
 - [`atan`](#atan)
 - [`cos`](#cos)
 - [`exp`](#exp)
+- [`finite?`](#finite?)
+- [`infinite?`](#infinite?)
 - [`log`](#log)
+- [`nan?`](#nan?)
 - [`sin`](#sin)
 - [`sqrt`](#sqrt)
 - [`tan`](#tan)
 
 #acos
+
+    (acos z)
+
 #asin
+
+    (asin z)
+
 #atan
+
+    (atan z)
+
 #cos
+
+    (cos z)
+
 #exp
+
+    (exp z)
+
+#finite?
+
+    (finite? z)
+
+#infinite?
+
+    (infinite? z)
+
 #log
+
+    (log z)
+
+#nan?
+
+    (nan? z)
+
 #sin
+
+    (sin z)
+
 #sqrt
+
+    (sqrt z)
+
 #tan
+
+    (tan z)
+