math: Fix UB in dbl-64 lrint

UBSAN: Undefined behaviour in ../sysdeps/ieee754/dbl-64/s_lrint.c:99:30 left shift of 1048576 by 11 cannot be represented in type 'long int'

diff --git a/sysdeps/ieee754/dbl-64/s_lrint.c b/sysdeps/ieee754/dbl-64/s_lrint.c
index 980959292e6e8f764a49d7707cf8440c0fb6967b..a3cd9ca756b888cd023924e87f2f43ffa67e8206 100644 (file)
--- a/sysdeps/ieee754/dbl-64/s_lrint.c
+++ b/sysdeps/ieee754/dbl-64/s_lrint.c
@@ -95,7 +95,7 @@ __lrint (double x)
          if (j0 == 20)
            result = (long int) i0;
          else
-           result = ((long int) i0 << (j0 - 20)) | (i1 >> (52 - j0));
+           result = (i0 << (j0 - 20)) | (i1 >> (52 - j0));
        }
     }
   else