[libc] Fix some warnings in tests. (#150500)

Author: lntue

libc/src/__support/FPUtil/generic/add_sub.h

@@ -153,8 +153,10 @@ add_or_sub(InType x, InType y) {
 
     result_mant <<= GUARD_BITS_LEN;
   } else {
-    InStorageType max_mant = max_bits.get_explicit_mantissa() << GUARD_BITS_LEN;
-    InStorageType min_mant = min_bits.get_explicit_mantissa() << GUARD_BITS_LEN;
+    InStorageType max_mant = static_cast<InStorageType>(
+        max_bits.get_explicit_mantissa() << GUARD_BITS_LEN);
+    InStorageType min_mant = static_cast<InStorageType>(
+        min_bits.get_explicit_mantissa() << GUARD_BITS_LEN);
 
     int alignment = (max_bits.get_biased_exponent() - max_bits.is_normal()) -
                     (min_bits.get_biased_exponent() - min_bits.is_normal());
@@ -172,7 +174,8 @@ add_or_sub(InType x, InType y) {
           (static_cast<InStorageType>(
               min_mant << (InFPBits::STORAGE_LEN - alignment))) != 0;
 
-    InStorageType min_mant_sticky(static_cast<int>(aligned_min_mant_sticky));
+    InStorageType min_mant_sticky =
+        static_cast<InStorageType>(static_cast<int>(aligned_min_mant_sticky));
 
     if (is_effectively_add)
       result_mant = max_mant + (aligned_min_mant | min_mant_sticky);

libc/test/src/math/FmaTest.h

@@ -48,7 +48,8 @@ class FmaTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
   InStorageType get_random_bit_pattern() {
     InStorageType bits{0};
     for (InStorageType i = 0; i < sizeof(InStorageType) / 2; ++i) {
-      bits = (bits << 2) + static_cast<uint16_t>(LIBC_NAMESPACE::rand());
+      bits = static_cast<InStorageType>(
+          (bits << 2) + static_cast<uint16_t>(LIBC_NAMESPACE::rand()));
     }
     return bits;
   }
@@ -57,7 +58,7 @@ class FmaTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
   using FmaFunc = OutType (*)(InType, InType, InType);
 
   void test_subnormal_range(FmaFunc func) {
-    constexpr InStorageType COUNT = 100'001;
+    constexpr InStorageType COUNT = 10'001;
     constexpr InStorageType RAW_STEP =
         (IN_MAX_SUBNORMAL_U - IN_MIN_SUBNORMAL_U) / COUNT;
     constexpr InStorageType STEP = (RAW_STEP == 0 ? 1 : RAW_STEP);
@@ -75,7 +76,7 @@ class FmaTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
   }
 
   void test_normal_range(FmaFunc func) {
-    constexpr InStorageType COUNT = 100'001;
+    constexpr InStorageType COUNT = 10'001;
     constexpr InStorageType RAW_STEP =
         (IN_MAX_NORMAL_U - IN_MIN_NORMAL_U) / COUNT;
     constexpr InStorageType STEP = (RAW_STEP == 0 ? 1 : RAW_STEP);

libc/test/src/math/HypotTest.h

@@ -71,8 +71,9 @@ class HypotTestTemplate : public LIBC_NAMESPACE::testing::FEnvSafeTest {
 
   void test_subnormal_range(Func func) {
     constexpr StorageType COUNT = 10'001;
-    for (unsigned scale = 0; scale < 4; ++scale) {
-      StorageType max_value = MAX_SUBNORMAL << scale;
+    constexpr unsigned SCALE = (sizeof(T) < 4) ? 1 : 4;
+    for (unsigned scale = 0; scale < SCALE; ++scale) {
+      StorageType max_value = static_cast<StorageType>(MAX_SUBNORMAL << scale);
       StorageType step = (max_value - MIN_SUBNORMAL) / COUNT + 1;
       for (int signs = 0; signs < 4; ++signs) {
         for (StorageType v = MIN_SUBNORMAL, w = max_value;

libc/test/src/wchar/wcstol_test.cpp

@@ -12,4 +12,4 @@
 
 #include "WcstolTest.h"
 
-WCSTOL_TEST(Wcstol, LIBC_NAMESPACE::wcstol)
+WCSTOL_TEST(Wcstol, LIBC_NAMESPACE::wcstol)

libc/test/src/wchar/wcstoll_test.cpp

@@ -12,4 +12,4 @@
 
 #include "WcstolTest.h"
 
-WCSTOL_TEST(Wcstoll, LIBC_NAMESPACE::wcstoll)
+WCSTOL_TEST(Wcstoll, LIBC_NAMESPACE::wcstoll)

libc/test/src/wchar/wcstoul_test.cpp

@@ -12,4 +12,4 @@
 
 #include "WcstolTest.h"
 
-WCSTOL_TEST(Wcstoul, LIBC_NAMESPACE::wcstoul)
+WCSTOL_TEST(Wcstoul, LIBC_NAMESPACE::wcstoul)

libc/test/src/wchar/wcstoull_test.cpp

@@ -12,4 +12,4 @@
 
 #include "WcstolTest.h"
 
-WCSTOL_TEST(Wcstoull, LIBC_NAMESPACE::wcstoull)
+WCSTOL_TEST(Wcstoull, LIBC_NAMESPACE::wcstoull)