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-rw-r--r--test/test-floatingpoint.c18
-rw-r--r--test/test-fp_cases.c190
-rwxr-xr-xtest/test.sh22
3 files changed, 228 insertions, 2 deletions
diff --git a/test/test-floatingpoint.c b/test/test-floatingpoint.c
new file mode 100644
index 00000000..f78b5d9f
--- /dev/null
+++ b/test/test-floatingpoint.c
@@ -0,0 +1,18 @@
+#include <stdlib.h>
+#include <unistd.h>
+
+int main(void)
+{
+    long double magic;
+
+    ssize_t bytes_read = read(STDIN_FILENO, &magic, sizeof(magic));
+    if (bytes_read < (ssize_t)sizeof(magic)) {
+        return 1;
+    }
+
+    if( (-magic == 15.0 + 0.5 + 0.125 + 0.03125 + 0.0078125) ){ /* 15 + 1/2 + 1/8 + 1/32 + 1/128 */
+        abort();
+    }
+
+    return 0;
+}
diff --git a/test/test-fp_cases.c b/test/test-fp_cases.c
new file mode 100644
index 00000000..006ae32f
--- /dev/null
+++ b/test/test-fp_cases.c
@@ -0,0 +1,190 @@
+/* test cases for floating point comparison transformations
+ * compile with -DFLOAT_TYPE=float
+ *          or  -DFLOAT_TYPE=double
+ *          or  -DFLOAT_TYPE="long double"
+ */
+
+
+#include <assert.h>
+
+int main() {
+  volatile FLOAT_TYPE a,b;
+  /* different values */
+  a = -2.1; b = -2;  /* signs equal, exp equal, mantissa > */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 1.8; b = 2.1;  /* signs equal, exp differ, mantissa > */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 2; b = 2.1;    /* signs equal, exp equal, mantissa < */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -2; b = -1.8;  /* signs equal, exp differ, mantissa < */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -1; b = 1;     /* signs differ, exp equal, mantissa equal */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -1; b = 0;     /* signs differ, exp differ, mantissa equal */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -2; b = 2.8;   /* signs differ, exp equal, mantissa < */ 
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -2; b = 1.8;   /* signs differ, exp differ, mantissa < */
+  assert((a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert(!(a >= b));
+  assert((a != b));
+  assert(!(a == b));
+
+
+  a = -2; b = -2.1;  /* signs equal, exp equal, mantissa > */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 2.1; b = 1.8;  /* signs equal, exp differ, mantissa > */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 2.1; b = 2;    /* signs equal, exp equal, mantissa < */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = -1.8; b = -2;  /* signs equal, exp differ, mantissa < */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 1; b = -1;     /* signs differ, exp equal, mantissa equal */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 0; b = -1;     /* signs differ, exp differ, mantissa equal */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 2.8; b = -2;   /* signs differ, exp equal, mantissa < */ 
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  a = 1.8; b = -2;   /* signs differ, exp differ, mantissa < */
+  assert((a > b));
+  assert((a >= b));
+  assert(!(a < b));
+  assert(!(a <= b));
+  assert((a != b));
+  assert(!(a == b));
+
+  /* equal values */
+  a = 0; b = 0;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = -0; b = 0;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = 1; b = 1;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = 0.5; b = 0.5;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = -1; b = -1;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+
+  a = -0.5; b = -0.5;
+  assert(!(a < b));
+  assert((a <= b));
+  assert(!(a > b));
+  assert((a >= b));
+  assert(!(a != b));
+  assert((a == b));
+}
diff --git a/test/test.sh b/test/test.sh
index 90920215..d76c1902 100755
--- a/test/test.sh
+++ b/test/test.sh
@@ -372,8 +372,7 @@ test -e ../afl-clang-fast -a -e ../split-switches-pass.so && {
     $ECHO "$YELLOW[-] llvm_mode InsTrim not compiled, cannot test"
     INCOMPLETE=1
   }
-  AFL_LLVM_INSTRUMENT=AFL
-  AFL_DEBUG=1 AFL_LLVM_LAF_SPLIT_SWITCHES=1 AFL_LLVM_LAF_TRANSFORM_COMPARES=1 AFL_LLVM_LAF_SPLIT_COMPARES=1 ../afl-clang-fast -o test-compcov.compcov test-compcov.c > test.out 2>&1
+  AFL_LLVM_INSTRUMENT=AFL AFL_DEBUG=1 AFL_LLVM_LAF_SPLIT_SWITCHES=1 AFL_LLVM_LAF_TRANSFORM_COMPARES=1 AFL_LLVM_LAF_SPLIT_COMPARES=1 ../afl-clang-fast -o test-compcov.compcov test-compcov.c > test.out 2>&1
   test -e test-compcov.compcov && test_compcov_binary_functionality ./test-compcov.compcov && {
     grep --binary-files=text -Eq " [ 123][0-9][0-9] location| [3-9][0-9] location" test.out && {
       $ECHO "$GREEN[+] llvm_mode laf-intel/compcov feature works correctly"
@@ -386,6 +385,25 @@ test -e ../afl-clang-fast -a -e ../split-switches-pass.so && {
     CODE=1
   }
   rm -f test-compcov.compcov test.out
+  AFL_LLVM_INSTRUMENT=AFL AFL_DEBUG=1 AFL_LLVM_LAF_SPLIT_COMPARES=1 AFL_LLVM_LAF_SPLIT_FLOATS=1 ../afl-clang-fast -o test-floatingpoint test-floatingpoint.c > test.out 2>&1
+  test -e test-floatingpoint && {
+    mkdir -p in
+    echo 0 > in/in
+    $ECHO "$GREY[*] running afl-fuzz with floating point splitting, this will take max. 16 seconds"
+    {
+      AFL_BENCH_UNTIL_CRASH=1 ../afl-fuzz -V16 -m ${MEM_LIMIT} -i in -o out -- ./test-floatingpoint >>errors 2>&1
+    } >>errors 2>&1
+    test -n "$( ls out/queue/id:000002* 2>/dev/null )" && {
+      $ECHO "$GREEN[+] llvm_mode laf-intel floatingpoint splitting feature works correctly"
+    } || {
+      $ECHO "$RED[!] llvm_mode laf-intel floatingpoint splitting feature failed"
+      CODE=1
+    }
+  } || {
+    $ECHO "$RED[!] llvm_mode laf-intel floatingpoint splitting feature compilation failed"
+    CODE=1
+  }
+  rm -f test-floatingpoint test.out in/in
   echo foobar.c > instrumentlist.txt
   AFL_DEBUG=1 AFL_LLVM_INSTRUMENT_FILE=instrumentlist.txt ../afl-clang-fast -o test-compcov test-compcov.c > test.out 2>&1
   test -e test-compcov && test_compcov_binary_functionality ./test-compcov && {
generated by cgit-pink 1.4.1 (git 2.36.1) at 2025-05-29 08:46:52 +0000