ICU-62141.0.1.tar.gz

[apple/icu.git] / icuSources / test / cintltst / putiltst.c

diff --git a/icuSources/test/cintltst/putiltst.c b/icuSources/test/cintltst/putiltst.c
index 424007a9b985b33f5416ad6a61a25c36e7179949..1c3e0730410dcccc9ffed5e3efc91bb48a8cb674 100644 (file)
--- a/icuSources/test/cintltst/putiltst.c
+++ b/icuSources/test/cintltst/putiltst.c
@@ -1,3 +1,5 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /********************************************************************
  * COPYRIGHT: 
  * Copyright (c) 1998-2016, International Business Machines Corporation and
@@ -126,6 +128,20 @@ static void TestPUtilAPI(void){
         log_err("ERROR: uprv_isInfinite failed.\n");
     }
 
+    log_verbose("Testing the APIs uprv_add32_overflow and uprv_mul32_overflow\n");
+    int32_t overflow_result;
+    doAssert(FALSE, uprv_add32_overflow(INT32_MAX - 2, 1, &overflow_result), "should not overflow");
+    doAssert(INT32_MAX - 1, overflow_result, "should equal INT32_MAX - 1");
+    doAssert(FALSE, uprv_add32_overflow(INT32_MAX - 2, 2, &overflow_result), "should not overflow");
+    doAssert(INT32_MAX, overflow_result, "should equal exactly INT32_MAX");
+    doAssert(TRUE, uprv_add32_overflow(INT32_MAX - 2, 3, &overflow_result), "should overflow");
+    doAssert(FALSE, uprv_mul32_overflow(INT32_MAX / 5, 4, &overflow_result), "should not overflow");
+    doAssert(INT32_MAX / 5 * 4, overflow_result, "should equal INT32_MAX / 5 * 4");
+    doAssert(TRUE, uprv_mul32_overflow(INT32_MAX / 5, 6, &overflow_result), "should overflow");
+    // Test on negative numbers:
+    doAssert(FALSE, uprv_add32_overflow(-3, -2, &overflow_result), "should not overflow");
+    doAssert(-5, overflow_result, "should equal -5");
+
 #if 0
     log_verbose("Testing the API uprv_digitsAfterDecimal()....\n");
     doAssert(uprv_digitsAfterDecimal(value1), 3, "uprv_digitsAfterDecimal() failed.");