linux-kernel - [PATCH v3 3/4] math.h: Add 64-bit fractional numbers types

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Message-ID: <f9ebbb830fab46201dacbffa4cbe223782f0acf3.1757001160.git.Jonathan.Santos@analog.com>
Date: Fri, 5 Sep 2025 06:49:32 -0300
From: Jonathan Santos <Jonathan.Santos@...log.com>
To: <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC: Jonathan Santos <Jonathan.Santos@...log.com>, <lars@...afoo.de>,
        <jic23@...nel.org>, <dlechner@...libre.com>, <nuno.sa@...log.com>,
        <andy@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <marcelo.schmitt1@...il.com>,
        <jonath4nns@...il.com>
Subject: [PATCH v3 3/4] math.h: Add 64-bit fractional numbers types

Extend fractional numbers types to include __u64 and __s64 data types.

Signed-off-by: Jonathan Santos <Jonathan.Santos@...log.com>
---
v3 Changes:
* New patch.
* OBS: Andy suggested to support long types, but the macro was made for
  data types like __TYPE. So i have added the __u64 and __s64 types.
---
 include/linux/math.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/math.h b/include/linux/math.h
index 0198c92cbe3e..ff28a0dcfaa8 100644
--- a/include/linux/math.h
+++ b/include/linux/math.h
@@ -130,6 +130,8 @@ __STRUCT_FRACT(s16)
 __STRUCT_FRACT(u16)
 __STRUCT_FRACT(s32)
 __STRUCT_FRACT(u32)
+__STRUCT_FRACT(s64)
+__STRUCT_FRACT(u64)
 #undef __STRUCT_FRACT
 
 /* Calculate "x * n / d" without unnecessary overflow or loss of precision. */
-- 
2.34.1