Minor update related to #36

MirMohammadd · Mar 22, 2024 · eec2b8b · eec2b8b
1 parent 37d7808
commit eec2b8b
Showing 1 changed file with 23 additions and 0 deletions.
diff --git a/include/vdso/math64.h b/include/vdso/math64.h
@@ -0,0 +1,23 @@
+#ifndef __VDSO_MATH64_H
+#define __VDSO_MATH64_H
+
+static __always_inline u32
+__iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder)
+{
+	u32 ret = 0;
+
+	while (dividend >= divisor) {
+		/* The following asm() prevents the compiler from
+		   optimising this loop into a modulo operation.  */
+		asm("" : "+rm"(dividend));
+
+		dividend -= divisor;
+		ret++;
+	}
+
+	*remainder = dividend;
+
+	return ret;
+}
+
+#endif /* __VDSO_MATH64_H */