Added benchmark program

Makefile

@@ -3,21 +3,29 @@ CFLAGS = -Wall -Wextra -Werror -pedantic-errors -fstack-protector-strong \
 	-fsanitize=address -fsanitize=undefined -fstack-clash-protection \
 	-Wwrite-strings -g -std=c99
 
+BENCH_FLAGS = -Wall -Wextra -Werror -O3
+
 SRC_DIR = src
+BENCH_SRC = benchmark
+
 OBJ_DIR = obj
+BENCH_OBJ_DIR = bench_obj
+
 TESTS_SRC = tests
 
 TARGET = usage
 TEST_V_TARGET = test_vector
 TEST_M_TARGET = test_map
 TEST_B_TARGET = test_bigint
+BENCH_TARGET = benchmark_datum
 
 LIB_OBJS = $(OBJ_DIR)/vector.o $(OBJ_DIR)/map.o $(OBJ_DIR)/bigint.o
 PROG_OBJS = $(OBJ_DIR)/usage.o
 
 .PHONY: all clean
 
-all: $(TARGET) $(TEST_V_TARGET) $(TEST_M_TARGET) $(TEST_B_TARGET)
+all: $(TARGET) $(TEST_V_TARGET) $(TEST_M_TARGET) $(TEST_B_TARGET) $(BENCH_TARGET)
+bench: $(BENCH_TARGET)
 
 $(TARGET): $(PROG_OBJS) $(LIB_OBJS)
 	$(CC) $(CFLAGS) -o $@ $^
@@ -43,5 +51,18 @@ $(OBJ_DIR)/%.o: $(TESTS_SRC)/%.c | $(OBJ_DIR)
 $(OBJ_DIR):
 	mkdir -p $(OBJ_DIR)
 
+# Benchmark rules
+$(BENCH_TARGET): $(BENCH_OBJ_DIR)/bench.o $(BENCH_OBJ_DIR)/vector.o $(BENCH_OBJ_DIR)/map.o
+	$(CC) $(BENCH_FLAGS) -o $@ $^
+
+$(BENCH_OBJ_DIR)/%.o: $(SRC_DIR)/%.c | $(BENCH_OBJ_DIR)
+	$(CC) $(BENCH_FLAGS) -c -o $@ $<
+
+$(BENCH_OBJ_DIR)/bench.o: $(BENCH_SRC)/benchmark.c | $(BENCH_OBJ_DIR)
+	$(CC) $(BENCH_FLAGS) -c -o $@ $<
+
+$(BENCH_OBJ_DIR):
+	mkdir -p $(BENCH_OBJ_DIR)
+
 clean:
-	rm -rf $(OBJ_DIR) $(TARGET) $(TEST_V_TARGET) $(TEST_M_TARGET) $(TEST_B_TARGET)
+	rm -rf $(OBJ_DIR) $(BENCH_OBJ_DIR) $(TARGET) $(TEST_V_TARGET) $(TEST_M_TARGET) $(TEST_B_TARGET) $(BENCH_TARGET)