LibC: Add imaxdiv and lldiv

Userland/Libraries/LibC/CMakeLists.txt

@@ -9,6 +9,7 @@ set(LIBC_SOURCES
  fenv.cpp
  getopt.cpp
  grp.cpp
+ inttypes.cpp
  ioctl.cpp
  libcinit.cpp
  libgen.cpp

Userland/Libraries/LibC/inttypes.cpp

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2021, Mițca Dumitru <[email protected]>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <inttypes.h>
+
+extern "C" {
+
+imaxdiv_t imaxdiv(intmax_t numerator, intmax_t denominator)
+{
+ imaxdiv_t result;
+ result.quot = numerator / denominator;
+ result.rem = numerator % denominator;
+
+ if (numerator >= 0 && result.rem < 0) {
+ result.quot++;
+ result.rem -= denominator;
+ }
+
+ return result;
+}
+}

Userland/Libraries/LibC/inttypes.h

@@ -27,6 +27,9 @@
 #pragma once
 
 #include <bits/stdint.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
 
 #define PRId8 "d"
 #define PRId16 "d"
@@ -68,3 +71,11 @@
 
 #define SCNu64 __PRI64_PREFIX "u"
 #define SCNd64 __PRI64_PREFIX "d"
+
+typedef struct imaxdiv_t {
+ intmax_t quot;
+ intmax_t rem;
+} imaxdiv_t;
+imaxdiv_t imaxdiv(intmax_t, intmax_t);
+
+__END_DECLS

Userland/Libraries/LibC/stdlib.cpp

@@ -836,6 +836,19 @@ ldiv_t ldiv(long numerator, long denominator)
  return result;
 }
 
+lldiv_t lldiv(long long numerator, long long denominator)
+{
+ lldiv_t result;
+ result.quot = numerator / denominator;
+ result.rem = numerator % denominator;
+
+ if (numerator >= 0 && result.rem < 0) {
+ result.quot++;
+ result.rem -= denominator;
+ }
+ return result;
+}
+
 size_t mbstowcs(wchar_t*, const char*, size_t)
 {
  dbgln("FIXME: Implement mbstowcs()");

Userland/Libraries/LibC/stdlib.h

@@ -102,6 +102,11 @@ typedef struct {
  long rem;
 } ldiv_t;
 ldiv_t ldiv(long, long);
+typedef struct {
+ long long quot;
+ long long rem;
+} lldiv_t;
+lldiv_t lldiv(long long, long long);
 
 int posix_openpt(int flags);
 int grantpt(int fd);