Implement scalar functions via a macro

1 files changed, 64 insertions, 151 deletions

diff --git a/functions.c b/functions.c
index 3d62828..daff046 100644
--- a/functions.c
+++ b/functions.c
@@ -525,159 +525,72 @@ fnTranspose(Array *right)
 
 /* Dyadic functions */
 
-Array *
-fnPlus(Array *left, Array *right)
-{
-	Array *leftarr;
-	Array *rightarr;
-	int rankok = scalarextend(left, right, &leftarr, &rightarr);
-	if(!rankok)
-		throwerror(nil, ERank);
-
-	int typeok = commontype(leftarr, rightarr, &left, &right, 0);
-	if(!typeok)
-		throwerror(nil, EType);
-
-	Array *res = duparray(left);
-	for(int i = 0; i < left->size; i++){
-		if(res->type == AtypeFloat)
-			res->floatdata[i] += right->floatdata[i];
-		else if(res->type == AtypeInt)
-			res->intdata[i] += right->intdata[i];
-	}
-	freearray(leftarr);
-	freearray(rightarr);
-	freearray(left);
-	freearray(right);
-	return res;
-}
-
-Array *
-fnMinus(Array *left, Array *right)
-{
-	Array *leftarr;
-	Array *rightarr;
-	int rankok = scalarextend(left, right, &leftarr, &rightarr);
-	if(!rankok)
-		throwerror(nil, ERank);
-
-	int typeok = commontype(leftarr, rightarr, &left, &right, 0);
-	if(!typeok)
-		throwerror(nil, EType);
-
-	Array *res = duparray(left);
-	for(int i = 0; i < left->size; i++){
-		if(res->type == AtypeFloat)
-			res->floatdata[i] -= right->floatdata[i];
-		else if(res->type == AtypeInt)
-			res->intdata[i] -= right->intdata[i];
-	}
-	freearray(leftarr);
-	freearray(rightarr);
-	freearray(left);
-	freearray(right);
-	return res;
-}
-
-Array *
-fnTimes(Array *left, Array *right)
-{
-	Array *leftarr;
-	Array *rightarr;
-	int rankok = scalarextend(left, right, &leftarr, &rightarr);
-	if(!rankok)
-		throwerror(nil, ERank);
-
-	int typeok = commontype(leftarr, rightarr, &left, &right, 0);
-	if(!typeok)
-		throwerror(nil, EType);
-
-	Array *res = duparray(left);
-	for(int i = 0; i < left->size; i++){
-		if(res->type == AtypeFloat)
-			res->floatdata[i] *= right->floatdata[i];
-		else if(res->type == AtypeInt)
-			res->intdata[i] *= right->intdata[i];
-	}
-	freearray(leftarr);
-	freearray(rightarr);
-	freearray(left);
-	freearray(right);
-	return res;
-}
-
-Array *
-fnDivide(Array *left, Array *right)
-{
-	Array *leftarr;
-	Array *rightarr;
-	int rankok = scalarextend(left, right, &leftarr, &rightarr);
-	if(!rankok)
-		throwerror(nil, ERank);
-
-	int typeok = commontype(leftarr, rightarr, &left, &right, 1);
-	if(!typeok)
-		throwerror(nil, EType);
-
-	Array *res = duparray(left);
-	for(int i = 0; i < left->size; i++)
+/* macro to define dyadic scalar functions */
+#define SCALAR_FUNCTION_2(name, forcefloat, cases) \
+Array *name(Array *left, Array *right){\
+	Array *leftarr, *rightarr;\
+	if(!commontype(left, right, &leftarr, &rightarr, forcefloat)) throwerror(nil, EType);\
+	if(!scalarextend(leftarr, rightarr, &left, &right)) throwerror(nil, ERank);\
+	Array *res = duparray(left);\
+	for(int i = 0; i < left->size; i++)\
+		switch(res->type){\
+		default: throwerror(nil, EType); break;\
+		case AtypeArray:\
+			freearray(res->arraydata[i]);\
+			res->arraydata[i] = name(left->arraydata[i], right->arraydata[i]);\
+			break;\
+		cases\
+		}\
+	freearray(leftarr); freearray(rightarr); freearray(left); freearray(right);\
+	return res;}
+
+SCALAR_FUNCTION_2(fnPlus, 0,
+	case AtypeFloat:
+		res->floatdata[i] += right->floatdata[i];
+		break;
+	case AtypeInt:
+		res->intdata[i] += right->intdata[i];
+		break;
+)
+
+SCALAR_FUNCTION_2(fnMinus, 0,
+	case AtypeFloat:
+		res->floatdata[i] -= right->floatdata[i];
+		break;
+	case AtypeInt:
+		res->intdata[i] -= right->intdata[i];
+		break;
+)
+
+SCALAR_FUNCTION_2(fnTimes, 0,
+	case AtypeFloat:
+		res->floatdata[i] *= right->floatdata[i];
+		break;
+	case AtypeInt:
+		res->intdata[i] *= right->intdata[i];
+		break;
+)
+
+SCALAR_FUNCTION_2(fnDivide, 1,
+	case AtypeFloat:
 		res->floatdata[i] /= right->floatdata[i];
-	freearray(leftarr);
-	freearray(rightarr);
-	freearray(left);
-	freearray(right);
-	return res;
-}
-
-Array *
-fnPower(Array *left, Array *right)
-{
-	Array *leftarr;
-	Array *rightarr;
-	int rankok = scalarextend(left, right, &leftarr, &rightarr);
-	if(!rankok)
-		throwerror(nil, ERank);
-
-	int typeok = commontype(leftarr, rightarr, &left, &right, 0);
-	if(!typeok)
-		throwerror(nil, EType);
-
-	Array *res = duparray(left);
-	for(int i = 0; i < left->size; i++){
-		if(res->type == AtypeFloat)
-			res->floatdata[i] = pow(res->floatdata[i], right->floatdata[i]);
-		else if(res->type == AtypeInt)
-			res->intdata[i] = pow(res->intdata[i], right->intdata[i]);
-	}
-	freearray(leftarr);
-	freearray(rightarr);
-	freearray(left);
-	freearray(right);
-	return res;
-}
-
-Array *
-fnLogarithm(Array *left, Array *right)
-{
-	Array *leftarr;
-	Array *rightarr;
-	int rankok = scalarextend(left, right, &leftarr, &rightarr);
-	if(!rankok)
-		throwerror(nil, ERank);
-
-	int typeok = commontype(leftarr, rightarr, &left, &right, 1);
-	if(!typeok)
-		throwerror(nil, EType);
-
-	Array *res = duparray(left);
-	for(int i = 0; i < left->size; i++)
+		break;
+)
+
+SCALAR_FUNCTION_2(fnPower, 0,
+	case AtypeFloat:
+		res->floatdata[i] = pow(res->floatdata[i], right->floatdata[i]);
+		break;
+	case AtypeInt:
+		res->intdata[i] = pow(res->intdata[i], right->intdata[i]);
+		break;
+)
+
+SCALAR_FUNCTION_2(fnLogarithm, 1,
+	case AtypeFloat:
 		res->floatdata[i] = log(right->floatdata[i])/log(res->floatdata[i]);
-	freearray(leftarr);
-	freearray(rightarr);
-	freearray(left);
-	freearray(right);
-	return res;
-}
+		break;
+)
 
 Array *
 fnLeft(Array *left, Array *right)