From 23c744bf624a6d24298d750bbc39c530c318428d Mon Sep 17 00:00:00 2001
From: Jez Ng <jezng@fb.com>
Date: Thu, 29 Aug 2024 13:40:16 -0400
Subject: [PATCH] Fix mantissa width for fp64 (#4606)

Per
https://en.wikipedia.org/wiki/Double-precision_floating-point_format, it
should be 52 bits.
---
 python/triton/language/core.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/triton/language/core.py b/python/triton/language/core.py
index cf86e9296a6a..16b1f2edbbca 100644
--- a/python/triton/language/core.py
+++ b/python/triton/language/core.py
@@ -378,7 +378,7 @@ def __init__(self, name):
                 self.primitive_bitwidth = 32
                 self.exponent_bias = 127
             elif name == 'fp64':
-                self.fp_mantissa_width = 53
+                self.fp_mantissa_width = 52
                 self.primitive_bitwidth = 64
                 self.exponent_bias = 1023
             else: