Long double test

build.sh

@@ -15,7 +15,7 @@ BINUTILS_BRANCH=${BINUTILS_BRANCH:-woarm64}
 BINUTILS_VERSION=binutils-master
 
 GCC_REPO=https://github.com/ZacWalk/gcc-woarm64.git
-GCC_BRANCH=${GCC_BRANCH:-woarm64}
+GCC_BRANCH=${GCC_BRANCH:-long-double}
 # GCC_VERSION=gcc-12.2.0
 GCC_VERSION=gcc-master
 
@@ -32,7 +32,7 @@ MSYS2_CONFIG=1
 TARGET=$TARGET_ARCH-w64-mingw32
 # TARGET=$TARGET_ARCH-pc-cygwin
 BUILD_DIR=build-$TARGET
-PARALLEL_MAKE=-j6
+PARALLEL_MAKE=-j$(nproc)
 MPFR_VERSION=mpfr-4.1.0
 GMP_VERSION=gmp-6.2.1
 MPC_VERSION=mpc-1.2.1

tests/build-tests.sh

@@ -2,21 +2,20 @@ rm *.s *.dump *.gkd *.exe *.dll *.log
 
 ~/cross/bin/aarch64-w64-mingw32-g++ -S test-bigdata.cpp -o test-bigdata.s -fdump-final-insns
 ~/cross/bin/aarch64-w64-mingw32-g++ -S test-throw.cpp -o test-throw.s -fdump-final-insns
-~/cross/bin/aarch64-w64-mingw32-g++ -S test-iostream.cpp -o test-iostream.cpp.s -fdump-final-insns
+~/cross/bin/aarch64-w64-mingw32-g++ -S test-iostream.cpp -o test-iostream.s -fdump-final-insns
 ~/cross/bin/aarch64-w64-mingw32-gcc -S test-math.c -o test-math.c.s -fdump-final-insns
-~/cross/bin/aarch64-w64-mingw32-gcc -S test-pdata.c -o test-pdata.s -fdump-final-insns
-~/cross/bin/aarch64-w64-mingw32-gcc -S test-struct.c -o test-struct.s -fdump-final-insns
+~/cross/bin/aarch64-w64-mingw32-gcc -S test-pdata.c -o test-pdata.c.s -fdump-final-insns
+~/cross/bin/aarch64-w64-mingw32-gcc -S test-struct.c -o test-struct.c.s -fdump-final-insns
 
 ~/cross/bin/aarch64-w64-mingw32-g++ -g test-bigdata.cpp -o test-bigdata.exe >> test-bigdata.log
 ~/cross/bin/aarch64-w64-mingw32-g++ -g test-throw.cpp -o test-throw.exe >> test-throw.log
 ~/cross/bin/aarch64-w64-mingw32-g++ -g test-iostream.cpp -o test-iostream.exe >> test-iostream.log
 ~/cross/bin/aarch64-w64-mingw32-gcc -g test-math.c -o test-math.c.exe >> test-math.c.log
-~/cross/bin/aarch64-w64-mingw32-gcc -g test-pdata.c -ldbghelp -o test-pdata.exe >> test-pdata.log
-~/cross/bin/aarch64-w64-mingw32-gcc -g test-struct.c -o test-struct.exe >> test-struct.log
-~/cross/bin/aarch64-w64-mingw32-gcc -g test-math.c -o test-math.exe >> test-math.log
-~/cross/bin/aarch64-w64-mingw32-gcc -g test-varargs.c -o test-varargs.exe >> test-varargs.log
-~/cross/bin/aarch64-w64-mingw32-gcc -g test-sjlj.c -o test-sjlj.exe >> test-sjlj.log
-~/cross/bin/aarch64-w64-mingw32-gcc -g -fopenmp test-omp.c -o test-omp.exe >> test-omp.log
+~/cross/bin/aarch64-w64-mingw32-gcc -g test-pdata.c -ldbghelp -o test-pdata.c.exe >> test-pdata.c.log
+~/cross/bin/aarch64-w64-mingw32-gcc -g test-struct.c -o test-struct.c.exe >> test-struct.c.log
+~/cross/bin/aarch64-w64-mingw32-gcc -g test-varargs.c -o test-varargs.c.exe >> test-varargs.c.log
+~/cross/bin/aarch64-w64-mingw32-gcc -g test-sjlj.c -o test-sjlj.c.exe >> test-sjlj.c.log
+~/cross/bin/aarch64-w64-mingw32-gcc -g -fopenmp test-omp.c -o test-omp.c.exe >> test-omp.c.log
 
 #
 # DLL examples 
@@ -38,6 +37,6 @@ rm *.s *.dump *.gkd *.exe *.dll *.log
 ~/cross/bin/aarch64-w64-mingw32-objdump -dr test-throw.exe >> test-throw.dump
 ~/cross/bin/aarch64-w64-mingw32-objdump -dr test-dll-auto.exe >> test-dll-auto.dump
 ~/cross/bin/aarch64-w64-mingw32-objdump -dr test-dll-export.exe >> test-dll-export.dump
-~/cross/bin/aarch64-w64-mingw32-objdump -dr test-struct.exe >> test-struct.dump
+~/cross/bin/aarch64-w64-mingw32-objdump -dr test-struct.c.exe >> test-struct.c.dump
 
 

tests/test-math.c

@@ -22,6 +22,10 @@ _Float128 baz (_Float128 x)
 }
 
 
+// Source: https://cpufun.substack.com/p/portable-support-for-128b-floats
+#define M_EF128 2.718281828459045235360287471352662498F128
+#define M_EQ 2.718281828459045235360287471352662498Q
+
 int main() 
 {
     foo (1.2Q);
@@ -33,6 +37,25 @@ int main()
     bar (1.2Q);
     baz (1.2Q);
 
-   printf("ok\n");
-   return 0;
-}
+    //int strfromf128(char * restrict s, size_t n, 
+    //           const char * restrict format, _Float128 fp);
+
+    //_Float128 strtof128(const char * restrict nptr, 
+    //                 char ** restrict endptr);
+
+    _Float128 f = M_EF128;
+    long double ld = M_EQ;
+    printf ("_Float128 %%qg => %qg\n", f);
+    printf ("_Float128 %%Qg => %Qg\n", f);
+    printf ("_Float128 %%Lg => %Lg\n", f);
+    printf ("long double %%qg => %qg\n", ld);
+    printf ("long double %%Qg => %Qg\n", ld);
+    printf ("long double %%Lg => %Lg\n", ld);
+
+    assert (sizeof(_Float128) == 16);
+    assert (sizeof(long double) == 8);
+    assert (sizeof(double) == 8);
+
+    printf ("ok\n");
+    return 0;
+}