[libc] Implement iswprint entrypoint (#185251)

Implemented the iswprint entrypoint and tests for issue #185136

libc/config/baremetal/arm/entrypoints.txt

@@ -312,6 +312,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wctype.iswblank
     libc.src.wctype.iswxdigit
     libc.src.wctype.iswpunct
+    libc.src.wctype.iswprint
     # internal entrypoints
     libc.startup.baremetal.init
     libc.startup.baremetal.fini

libc/config/baremetal/riscv/entrypoints.txt

@@ -309,6 +309,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wctype.iswblank
     libc.src.wctype.iswxdigit
     libc.src.wctype.iswpunct
+    libc.src.wctype.iswprint
 
     # internal entrypoints
     libc.startup.baremetal.init

libc/config/darwin/aarch64/entrypoints.txt

@@ -112,6 +112,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wctype.iswblank
     libc.src.wctype.iswxdigit
     libc.src.wctype.iswpunct
+    libc.src.wctype.iswprint
 )
 
 if(LLVM_LIBC_FULL_BUILD)

libc/config/linux/aarch64/entrypoints.txt

@@ -383,6 +383,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wctype.iswblank
     libc.src.wctype.iswxdigit
     libc.src.wctype.iswpunct
+    libc.src.wctype.iswprint
 
     # sys/uio.h entrypoints
     libc.src.sys.uio.writev

libc/config/linux/arm/entrypoints.txt

@@ -204,6 +204,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wctype.iswblank
     libc.src.wctype.iswxdigit
     libc.src.wctype.iswpunct
+    libc.src.wctype.iswprint
 )
 
 if(LLVM_LIBC_FULL_BUILD)

libc/config/linux/riscv/entrypoints.txt

@@ -387,6 +387,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wctype.iswblank
     libc.src.wctype.iswxdigit
     libc.src.wctype.iswpunct
+    libc.src.wctype.iswprint
 
     # sys/uio.h entrypoints
     libc.src.sys.uio.writev

libc/config/linux/x86_64/entrypoints.txt

@@ -437,6 +437,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wctype.iswblank
     libc.src.wctype.iswxdigit
     libc.src.wctype.iswpunct
+    libc.src.wctype.iswprint
 
     # sys/uio.h entrypoints
     libc.src.sys.uio.writev

libc/config/windows/entrypoints.txt

@@ -118,6 +118,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wctype.iswblank
     libc.src.wctype.iswxdigit
     libc.src.wctype.iswpunct
+    libc.src.wctype.iswprint
 )
 
 set(TARGET_LIBM_ENTRYPOINTS

libc/include/wctype.yaml

@@ -68,3 +68,9 @@ functions:
     return_type: int
     arguments:
       - type: wint_t
+  - name: iswprint
+    standards:
+      - stdc
+    return_type: int
+    arguments:
+      - type: wint_t

libc/src/wctype/CMakeLists.txt

@@ -5,7 +5,7 @@ add_entrypoint_object(
   HDRS
     iswalpha.h
   DEPENDS
-    libc.src.__support.wctype_utils    
+    libc.src.__support.wctype_utils
 )
 
 add_entrypoint_object(
@@ -119,3 +119,14 @@ add_entrypoint_object(
     libc.src.__support.wctype_utils
     libc.hdr.types.wint_t
 )
+
+add_entrypoint_object(
+  iswprint
+  SRCS
+    iswprint.cpp
+  HDRS
+    iswprint.h
+  DEPENDS
+    libc.src.__support.wctype_utils
+    libc.hdr.types.wint_t
+)

libc/src/wctype/iswprint.cpp

@@ -0,0 +1,21 @@
+//===-- Implementation of iswprint ----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/wctype/iswprint.h"
+#include "src/__support/common.h"
+#include "src/__support/wctype_utils.h"
+
+#include "hdr/types/wint_t.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(int, iswprint, (wint_t c)) {
+  return internal::isprint(static_cast<wchar_t>(c));
+}
+
+} // namespace LIBC_NAMESPACE_DECL

libc/src/wctype/iswprint.h

@@ -0,0 +1,21 @@
+//===-- Implementation header for iswprint ----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_WCTYPE_ISWPRINT_H
+#define LLVM_LIBC_SRC_WCTYPE_ISWPRINT_H
+
+#include "hdr/types/wint_t.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+int iswprint(wint_t c);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_WCTYPE_ISWPRINT_H

libc/test/src/wctype/CMakeLists.txt

@@ -111,3 +111,13 @@ add_libc_test(
   DEPENDS
     libc.src.wctype.iswpunct
 )
+
+add_libc_test(
+  iswprint_test
+  SUITE
+    libc_wctype_unittests
+  SRCS
+    iswprint_test.cpp
+  DEPENDS
+    libc.src.wctype.iswprint
+)

libc/test/src/wctype/iswprint_test.cpp

@@ -0,0 +1,21 @@
+//===-- Unittests for iswprint --------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/wctype/iswprint.h"
+
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibciswprint, SimpleTest) {
+  for (int ch = -255; ch < 255; ++ch) {
+    if (' ' <= ch && ch <= '~') {
+      EXPECT_NE(LIBC_NAMESPACE::iswprint(ch), 0);
+    } else {
+      EXPECT_EQ(LIBC_NAMESPACE::iswprint(ch), 0);
+    }
+  }
+}