stdc_load8: Add tests.

* tests/test-stdc_load8.c: New file, based on
tests/test-stdc_load8_aligned.c.
* modules/stdc_load8-tests: New file.

diff --git a/ChangeLog b/ChangeLog
index 8bb1cdfdc42d9026cf63496de2db1fe2c3391603..e9a7699cd590b1b7f7ad83421b23a4c921299647 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2026-03-12  Bruno Haible  <bruno@clisp.org>
 
+       stdc_load8: Add tests.
+       * tests/test-stdc_load8.c: New file, based on
+       tests/test-stdc_load8_aligned.c.
+       * modules/stdc_load8-tests: New file.
+
        stdc_load8: New module.
        * lib/stdbit.in.h (_GL_STDC_LOAD8_INLINE): New macro.
        (stdc_load8_beu{8,16,32,64}, stdc_load8_leu{8,16,32,64},

diff --git a/modules/stdc_load8-tests b/modules/stdc_load8-tests
new file mode 100644 (file)
index 0000000..6ec3bdf
--- /dev/null
+++ b/modules/stdc_load8-tests
@@ -0,0 +1,11 @@
+Files:
+tests/test-stdc_load8.c
+tests/macros.h
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-stdc_load8
+check_PROGRAMS += test-stdc_load8

diff --git a/tests/test-stdc_load8.c b/tests/test-stdc_load8.c
new file mode 100644 (file)
index 0000000..ebb4ef9
--- /dev/null
+++ b/tests/test-stdc_load8.c
@@ -0,0 +1,186 @@
+/* Test of stdc_load8_* (unaligned) functions.
+   Copyright (C) 2026 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2026.  */
+
+#include <config.h>
+
+#include <stdbit.h>
+
+#include "macros.h"
+
+static void
+test_stdc_load8_beu8 (void)
+{
+  static unsigned char data[1] = { 0xD5 };
+  uint8_t result = stdc_load8_beu8 (data);
+  ASSERT (result == 0xD5);
+}
+
+static void
+test_stdc_load8_beu16 (void)
+{
+  static union { unsigned char bytes[1 + 2]; uint16_t align; } data =
+    { { 0, 0xD5, 0xE6 } };
+  uint16_t result = stdc_load8_beu16 (data.bytes + 1);
+  ASSERT (result == 0xD5E6);
+}
+
+static void
+test_stdc_load8_beu32 (void)
+{
+  static union { unsigned char bytes[1 + 4]; uint32_t align; } data =
+    { { 0, 0xD5, 0xE6, 0xC2, 0xF4 } };
+  uint32_t result = stdc_load8_beu32 (data.bytes + 1);
+  ASSERT (result == 0xD5E6C2F4U);
+}
+
+static void
+test_stdc_load8_beu64 (void)
+{
+  static union { unsigned char bytes[1 + 8]; uint64_t align; } data =
+    { { 0, 0xD5, 0xE6, 0xC2, 0xF4, 0xF1, 0xC9, 0xEA, 0xDF } };
+  uint64_t result = stdc_load8_beu64 (data.bytes + 1);
+  ASSERT (result == 0xD5E6C2F4F1C9EADFULL);
+}
+
+static void
+test_stdc_load8_leu8 (void)
+{
+  static unsigned char data[1] = { 0xD5 };
+  uint8_t result = stdc_load8_leu8 (data);
+  ASSERT (result == 0xD5);
+}
+
+static void
+test_stdc_load8_leu16 (void)
+{
+  static union { unsigned char bytes[1 + 2]; uint16_t align; } data =
+    { { 0, 0xD5, 0xE6 } };
+  uint16_t result = stdc_load8_leu16 (data.bytes + 1);
+  ASSERT (result == 0xE6D5);
+}
+
+static void
+test_stdc_load8_leu32 (void)
+{
+  static union { unsigned char bytes[1 + 4]; uint32_t align; } data =
+    { { 0, 0xD5, 0xE6, 0xC2, 0xF4 } };
+  uint32_t result = stdc_load8_leu32 (data.bytes + 1);
+  ASSERT (result == 0xF4C2E6D5U);
+}
+
+static void
+test_stdc_load8_leu64 (void)
+{
+  static union { unsigned char bytes[1 + 8]; uint64_t align; } data =
+    { { 0, 0xD5, 0xE6, 0xC2, 0xF4, 0xF1, 0xC9, 0xEA, 0xDF } };
+  uint64_t result = stdc_load8_leu64 (data.bytes + 1);
+  ASSERT (result == 0xDFEAC9F1F4C2E6D5ULL);
+}
+
+static void
+test_stdc_load8_bes8 (void)
+{
+  static unsigned char data[1] = { 0xD5 };
+  int8_t result = stdc_load8_bes8 (data);
+  ASSERT (result == (int8_t) 0xD5);
+}
+
+static void
+test_stdc_load8_bes16 (void)
+{
+  static union { unsigned char bytes[1 + 2]; int16_t align; } data =
+    { { 0, 0xD5, 0xE6 } };
+  int16_t result = stdc_load8_bes16 (data.bytes + 1);
+  ASSERT (result == (int16_t) 0xD5E6);
+}
+
+static void
+test_stdc_load8_bes32 (void)
+{
+  static union { unsigned char bytes[1 + 4]; int32_t align; } data =
+    { { 0, 0xD5, 0xE6, 0xC2, 0xF4 } };
+  int32_t result = stdc_load8_bes32 (data.bytes + 1);
+  ASSERT (result == 0xD5E6C2F4);
+}
+
+static void
+test_stdc_load8_bes64 (void)
+{
+  static union { unsigned char bytes[1 + 8]; int64_t align; } data =
+    { { 0, 0xD5, 0xE6, 0xC2, 0xF4, 0xF1, 0xC9, 0xEA, 0xDF } };
+  int64_t result = stdc_load8_bes64 (data.bytes + 1);
+  ASSERT (result == 0xD5E6C2F4F1C9EADFLL);
+}
+
+static void
+test_stdc_load8_les8 (void)
+{
+  static unsigned char data[1] = { 0xD5 };
+  int8_t result = stdc_load8_les8 (data);
+  ASSERT (result == (int8_t) 0xD5);
+}
+
+static void
+test_stdc_load8_les16 (void)
+{
+  static union { unsigned char bytes[1 + 2]; int16_t align; } data =
+    { { 0, 0xD5, 0xE6 } };
+  int16_t result = stdc_load8_les16 (data.bytes + 1);
+  ASSERT (result == (int16_t) 0xE6D5);
+}
+
+static void
+test_stdc_load8_les32 (void)
+{
+  static union { unsigned char bytes[1 + 4]; int32_t align; } data =
+    { { 0, 0xD5, 0xE6, 0xC2, 0xF4 } };
+  int32_t result = stdc_load8_les32 (data.bytes + 1);
+  ASSERT (result == 0xF4C2E6D5);
+}
+
+static void
+test_stdc_load8_les64 (void)
+{
+  static union { unsigned char bytes[1 + 8]; int64_t align; } data =
+    { { 0, 0xD5, 0xE6, 0xC2, 0xF4, 0xF1, 0xC9, 0xEA, 0xDF } };
+  int64_t result = stdc_load8_les64 (data.bytes + 1);
+  ASSERT (result == 0xDFEAC9F1F4C2E6D5LL);
+}
+
+int
+main ()
+{
+  test_stdc_load8_beu8 ();
+  test_stdc_load8_beu16 ();
+  test_stdc_load8_beu32 ();
+  test_stdc_load8_beu64 ();
+  test_stdc_load8_leu8 ();
+  test_stdc_load8_leu16 ();
+  test_stdc_load8_leu32 ();
+  test_stdc_load8_leu64 ();
+  test_stdc_load8_bes8 ();
+  test_stdc_load8_bes16 ();
+  test_stdc_load8_bes32 ();
+  test_stdc_load8_bes64 ();
+  test_stdc_load8_les8 ();
+  test_stdc_load8_les16 ();
+  test_stdc_load8_les32 ();
+  test_stdc_load8_les64 ();
+
+  return test_exit_status;
+}