2016 Update

Task/Literals-Floating-point/00DESCRIPTION

@@ -1,7 +1,13 @@
-Programming languages have different ways of expressing floating-point literals. Show how floating-point literals can be expressed in your language: decimal or other bases, exponential notation, and any other special features.
+Programming languages have different ways of expressing floating-point literals.
+
+
+;Task:
+Show how floating-point literals can be expressed in your language: decimal or other bases, exponential notation, and any other special features.
 
 You may want to include a regular expression or BNF/ABNF/EBNF defining allowable formats for your language.
 
-See also [[Literals/Integer]].
 
-Cf. [[Extreme floating point values]]
+;Related tasks:
+*   [[Literals/Integer]]
+*   [[Extreme floating point values]]
+<br><br>

Task/Literals-Floating-point/ALGOL-68/literals-floating-point.alg

@@ -0,0 +1,24 @@
+# floating point literals are called REAL denotations in Algol 68      #
+# They have the following forms:                                       #
+#     1: a digit sequence followed by "." followed by a digit sequence #
+#     2: a "." followed by a digit sequence                            #
+#     3: forms 1 or 2 followed by "e" followed by an optional sign     #
+#                     followed by a digit sequence                     #
+#     4: a digit sequence follows by "e" followed by an optional sign  #
+#                     followed by a digit sequence                     #
+#                                                                      #
+# The "e" indicates the following optionally-signed digit sequence is  #
+# the exponent of the literal.                                         #
+# If the implementation allows, a "times ten to the power symbol"      #
+# can be used to replace "e" - e.g. a subscript "10" character         #
+#                                                                      #
+# spaces can appear anywhere in the denotation                         #
+# Examples:                                                            #
+REAL r;
+r := 1.234;
+r :=  .987;
+r := 4.2e-9;
+r := .4e+23;
+r := 1e10;
+r := 3.142e-23;
+r := 1 234 567 .      9           e -                  4;

Task/Literals-Floating-point/Kotlin/literals-floating-point.kotlin

@@ -0,0 +1,4 @@
+1.0 // double
+1.234e-10 // double
+728832f // float
+728832F // float

Task/Literals-Floating-point/Perl-6/literals-floating-point.pl6

@@ -1,4 +1,5 @@
-6.02e23                   # standard E notation
-:10<6.02 * 10 ** 23>      # radix notation
-:5<11.002 * 10 ** 23>     # exponent is still decimal
-:5<11.002*:5<20>**:5<43>> # all in base 5
+2e2      # same as 200e0, 2e2, 200.0e0  and 2.0e2
+6.02e23
+-2e48
+1e-9
+1e0