Add docs/tests to the old BASIC_OP functions.

Also test `poss`.

src/env.c

@@ -215,8 +215,6 @@ struct helpText {
 int currentHelp = 0;
 struct helpText helpTexts[100];
 
-#define pf(_func) buildFuncSym(_func ## Symbol, &(_func), _func ## Doc, _func ## Tests, array_length(_func ## Tests))
-
 /// For any instances (e.g. segfault recovery) where defaultEnv() may be called
 /// multiple times.
 int helpInitialized = 0;
@@ -376,6 +374,8 @@ int runTests(int detailed)
     return failureCount;
 }
 
+#define pf(_func) buildFuncSym(_func ## Symbol, &(_func), _func ## Doc, _func ## Tests, array_length(_func ## Tests))
+
 struct Environment defaultEnv()
 {
     if (!helpInitialized) {
@@ -395,16 +395,16 @@ struct Environment defaultEnv()
     };
 
     struct symFunc symFuncs[] = {
-        {"+", &add},
-        {"-", &sub},
-        {"*", &mul},
-        {"/", &dvi},
-        {"%", &mod},
-        {"=", &equ},
-        {">", &greaterThan},
-        {"<", &lessThan},
-        {"&", &and},
-        {"|", &or},
+        pf(add),
+        pf(sub),
+        pf(mul),
+        pf(dvi),
+        pf(mod),
+        pf(equ),
+        pf(greaterThan),
+        pf(lessThan),
+        pf(and),
+        pf(or),
         pf(catObjects),
         pf(filter),
         pf(len),

src/plfunc.h

@@ -3,30 +3,69 @@
 
 #include "pebblisp.h"
 
-#define BASIC_OP(_name) \
-    Object _name(Object* params, int length, struct Environment* env)
+fn(add, "+",
+   "Add numbers",
+   "(+ 1 2)", "3",
+   "(+ 1 2 3 4)", "10",
+);
 
-BASIC_OP(add);
+fn(sub, "-",
+   "Subtract numbers",
+   "(- 3 2)", "1",
+   "(- 10 3 1)", "6",
+);
 
-BASIC_OP(sub);
+fn(mul, "*",
+   "Multiply numbers",
+   "(* 3 2)", "6",
+   "(* 1 2 3 4)", "24",
+);
 
-BASIC_OP(mul);
+fn(dvi, "/",
+   "Divide numbers",
+   "(/ 8 2)", "4",
+   "(/ 100 5 2)", "10",
+);
 
-BASIC_OP(dvi);
+fn(mod, "%",
+   "Get the modulus of two numbers",
+   "(% 10 3)", "1",
+);
 
-BASIC_OP(mod);
+fn(equ, "=",
+   "Check if two values are equal",
+   "(= (+ 2 2) 4)", "T",
+   "(= \"Hello\" (cat \"He\" \"llo\"))", "T",
+   "(= (1 2 3) (1 2 3))", "T",
+   "(= 10 \"10\")", "F",
+   "(= 2 5)", "F",
+);
 
-BASIC_OP(equ);
+fn(greaterThan, ">",
+   "Check if one number is greater than another",
+   "(> 10 3)", "T",
+   "(> 2 5)", "F",
+);
 
-BASIC_OP(greaterThan);
+fn(lessThan, "<",
+   "Check if one number is less than another",
+   "(< 2 5)", "T",
+   "(< 10 3)", "F",
+);
 
-BASIC_OP(lessThan);
+fn(and, "&",
+   "Check if all conditions are true",
+   "(& T T)", "T",
+   "(& F T)", "F",
+   "(& T T T T T F)", "F",
+);
 
-BASIC_OP(and);
-
-BASIC_OP(or);
-
-#undef BASIC_OP
+fn(or, "|",
+   "Check if any conditions are true",
+   "(| T F)", "T",
+   "(| F F)", "F",
+   "(| F F F F F T)", "T",
+);
 
 tfn(catObjects, "cat",
     ({ NULL, isStringy }),
@@ -152,9 +191,10 @@ fn(parseEvalO, "eval",
 
 /// STRUCT, STRING => ANY
 fn(possessive, "poss",
-   "(struct Post (title body))\n"
-   "(def p (Post \"TI\" \"BO\"))\n"
-   "p's title => TI"
+   "Get the value of a struct's field",
+   "(struct Post (title body))\n   "
+   "(def p (Post \"TI\" \"BO\"))\n   "
+   "p's title", "TI"
 );
 
 #ifdef STANDALONE