add div functions

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/src/stdlib/div.c b/src/stdlib/div.c
new file mode 100644
index 0000000..fb32d53
--- /dev/null
+++ b/src/stdlib/div.c
@@ -0,0 +1,68 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+#include <stdlib.h>
+
+
+# pragma GCC diagnostic ignored "-Waggregate-return"
+
+
+
+/**
+ * Perform an integer division and return
+ * both the quotient and the remainder.
+ * 
+ * @param   numerator    The numerator.
+ * @param   denominator  The denominator.
+ * @return               The quotient in `.quot`, and
+ *                       the remainder in `.rem`.
+ */
+div_t div(int numerator, int denominator)
+{
+  return (div_t){ numerator / denominator, numerator % denominator };
+}
+
+
+/**
+ * Perform an integer division and return
+ * both the quotient and the remainder.
+ * 
+ * @param   numerator    The numerator.
+ * @param   denominator  The denominator.
+ * @return               The quotient in `.quot`, and
+ *                       the remainder in `.rem`.
+ */
+ldiv_t ldiv(long numerator, long denominator)
+{
+  return (ldiv_t){ numerator / denominator, numerator % denominator };
+}
+
+
+/**
+ * Perform an integer division and return
+ * both the quotient and the remainder.
+ * 
+ * @param   numerator    The numerator.
+ * @param   denominator  The denominator.
+ * @return               The quotient in `.quot`, and
+ *                       the remainder in `.rem`.
+ */
+lldiv_t lldiv(long long numerator, long long denominator)
+{
+  return (lldiv_t){ numerator / denominator, numerator % denominator };
+}
+