halcompile: warn on fp/nofp, remove from in-tree .comp files

Add optfp_warn() in halcompile that silently forces fp to 1 when
fp or nofp keywords are used in function declarations. Out-of-tree
.comp files will still parse without error.

Remove fp/nofp from all in-tree .comp files, conv.comp.in template,
and mkconv.sh generator.

Based on patch by BsAtHome.

Ref: #3895

Author: Luca Toniolo

src/hal/components/abs_s32.comp

@@ -21,7 +21,7 @@ pin out bit sign "Sign of input, false for positive, true for negative" ;
 pin out bit is_positive "TRUE if input is positive, FALSE if input is 0 or negative";
 pin out bit is_negative "TRUE if input is negative, FALSE if input is 0 or positive";
 
-function _ nofp;
+function _;
 license "GPL";
 author "Sebastian Kuzminsky";
 ;;

src/hal/components/and2.comp

@@ -14,7 +14,7 @@ Otherwise,
 \\fBout=FALSE\\fR
 .RE"""
 ;
-function _ nofp;
+function _;
 see_also """
 \\fBlogic\\fR(9),
 \\fBlut5\\fR(9),

src/hal/components/bin2gray.comp

@@ -4,6 +4,6 @@ pin in unsigned in "binary code in";
 pin out unsigned out "gray code out";
 license "GPL";
 author "Andy Pugh";
-function _ nofp;
+function _;
 ;;
 out = (in >> 1) ^ in;

src/hal/components/bitslice.comp

@@ -7,7 +7,7 @@ pin in u32 in "The input value";
 pin out bit out-##[32:personality];
 author "Andy Pugh";
 license "GPL2+";
-function _ nofp;
+function _;
 option personality yes;
 ;;
 int i;

src/hal/components/bitwise.comp

@@ -10,7 +10,7 @@ pin out u32 out-xnor "The inverse of the bitwise XOR";
 
 author "Andy Pugh";
 license "GPL 2+";
-function _ nofp;
+function _;
 ;;
 
 out_and = (in0 & in1);

src/hal/components/charge_pump.comp

@@ -21,7 +21,7 @@ pin out bit out "Square wave if 'enable' is TRUE or unconnected, low if 'enable'
 pin out bit out-2 "Square wave at half the frequency of 'out'";
 pin out bit out-4 "Square wave at a quarter of the frequency of 'out'";
 pin in bit enable = TRUE "If FALSE, forces all 'out' pins to be low";
-function _ nofp "Toggle the output bit (if enabled)";
+function _ "Toggle the output bit (if enabled)";
 description """
 The 'Charge Pump' should be added to the base thread function.
 When enabled the output is on for one period and off for one period. To calculate the

src/hal/components/comp.comp

@@ -12,7 +12,7 @@ separated by distance \\fBhyst\\fR around the point where \\fBin1\\fR = \\fBin0\
 Keep in mind that floating point calculations are never absolute
 and it is wise to always set \\fBhyst\\fR if you intend to use equal """;
 
-function _ fp "Update the comparator";
+function _ "Update the comparator";
 license "GPL";
 author "Jeff Epler";
 ;;

src/hal/components/conv.comp.in

@@ -3,7 +3,7 @@ pin in @IN@ in_;
 pin out @OUT@ out;
 @CC@ pin out bit out_of_range "TRUE when 'in' is not in the range of @OUT@";
 @CC@ param rw bit clamp """If TRUE, then clamp to the range of @OUT@.  If FALSE, then allow the value to "wrap around".""";
-function _ @FP@ "Update 'out' based on 'in'";
+function _ "Update 'out' based on 'in'";
 license "GPL";
 author "Jeff Epler";
 

src/hal/components/dbounce.comp

@@ -9,7 +9,7 @@ pin out bit out;
 pin in  u32 delay = 5;
 
 variable int state;
-function _ nofp;
+function _;
 license "GPL";
 author "Dewey Garrett";
 ;;

src/hal/components/edge.comp

@@ -28,7 +28,7 @@ param r signed time_left_ns "Time left in this output pulse";
 param r bit last_in "Previous input value";
 variable int first = 1;
 
-function _ nofp "Produce output pulses from input edges";
+function _ "Produce output pulses from input edges";
 license "GPL";
 author "Jeff Epler";
 ;;