Add the supplemental tests

Author: kolemannix

Makefile

@@ -1,4 +1,4 @@
-.PHONY: test example
+.PHONY: test example fetch-supplemental-data
 
 # Detect linux and define _DEFAULT_SOURCE if so
 UNAME_S := $(shell uname -s)
@@ -7,18 +7,39 @@ ifeq ($(UNAME_S),Linux)
 endif
 
 CLANG_FLAGS := -xc -Wall -Wextra -Wpedantic -O3 -g -std=c99 $(EXTRA_CFLAGS)
+SUPPLEMENTAL_TEST_FILES_DIR := out/supplemental_test_files
+SUPPLEMENTAL_TEST_DATA_DIR := $(SUPPLEMENTAL_TEST_FILES_DIR)/data
+SUPPLEMENTAL_TEST_FILES_REPO := https://github.com/fastfloat/supplemental_test_files.git
 
 out/test_runner: ffc.h test_src/test.c | out
 	gcc -xc -Wall -Wextra -Wpedantic ffc.h -fsyntax-only
 	clang $(CLANG_FLAGS) -I. -Itest_src test_src/test.c -o out/test_runner -lm
 
-test: out/test_runner out/test_int_runner
+test: out/test_runner out/test_int_runner out/supplemental_tests out/supplemental_tests_src
 	./out/test_runner
 	./out/test_int_runner
+	./out/supplemental_tests
+	./out/supplemental_tests_src
 
 out/test_int_runner: ffc.h test_src/test_int.c | out
 	clang $(CLANG_FLAGS) -I. -Itest_src test_src/test_int.c -o out/test_int_runner -lm
 
+$(SUPPLEMENTAL_TEST_DATA_DIR):
+	@test -d "$(SUPPLEMENTAL_TEST_DATA_DIR)" || { \
+		echo "Missing supplemental test data at $(SUPPLEMENTAL_TEST_DATA_DIR)." >&2; \
+		echo "Run 'make fetch-supplemental-data' first." >&2; \
+		exit 1; \
+	}
+
+out/supplemental_tests: ffc.h test_src/supplemental_tests.c $(SUPPLEMENTAL_TEST_DATA_DIR) | out
+	clang $(CLANG_FLAGS) -I. -Itest_src -DSUPPLEMENTAL_TEST_DATA_DIR=\"$(SUPPLEMENTAL_TEST_DATA_DIR)\" test_src/supplemental_tests.c -o out/supplemental_tests -lm
+
+out/supplemental_tests_src: src/ffc.h test_src/supplemental_tests.c $(SUPPLEMENTAL_TEST_DATA_DIR) | out
+	clang $(CLANG_FLAGS) -Isrc -Itest_src -DSUPPLEMENTAL_TEST_DATA_DIR=\"$(SUPPLEMENTAL_TEST_DATA_DIR)\" test_src/supplemental_tests.c -o out/supplemental_tests_src -lm
+
+fetch-supplemental-data: | out
+	git clone --depth 1 $(SUPPLEMENTAL_TEST_FILES_REPO) $(SUPPLEMENTAL_TEST_FILES_DIR)
+
 ffc.h: src/ffc.h src/common.h src/parse.h src/digit_comparison.h src/api.h src/bigint.h amalgamate.py
 	python3 amalgamate.py > ffc.h
 

readme.md

@@ -70,6 +70,10 @@ make test
 make example
 ```
 
+`make test` builds and runs the base tests plus supplemental tests.
+Run `make fetch-supplemental-data` once first to clone `supplemental_test_files`
+into `out/`.
+
 ### With CMake
 
 ffc.h supports building with CMake as an installable single-header library.
@@ -169,4 +173,4 @@ ffc                                     :  1019.67 MB/s (+/- 7.3 %)   138.91 Mfl
   51 (8), 2021.
 * Noble Mushtak, Daniel Lemire, [Fast Number Parsing Without
   Fallback](https://arxiv.org/abs/2212.06644), Software: Practice and Experience
-  53 (7), 2023.
+  53 (7), 2023.

test_src/supplemental_tests.c

@@ -1,3 +1,4 @@
+#define FFC_IMPL
 #include "ffc.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -161,4 +162,4 @@ int main(void) {
     closedir(dir);
 #endif
     return all_passed ? EXIT_SUCCESS : EXIT_FAILURE;
-}
+}