From: GNU Libc Maintainers <debian-glibc@lists.debian.org>
Date: Wed, 16 Dec 2020 21:33:25 +0000 (+0000)
Subject: local-asin-acos-raise-invalid
X-Git-Tag: archive/raspbian/2.31-6+rpi1^2~48
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=8d275d70933fa7f36e29a961ca6e3ee4bd945ccc;p=glibc.git

local-asin-acos-raise-invalid

This workarounds GCC bug PR 95115 introduced in GCC 10. This is similar to
what is done in the float version.


Gbp-Pq: Topic riscv64
Gbp-Pq: Name local-asin-acos-raise-invalid.diff
---

diff --git a/sysdeps/ieee754/dbl-64/e_asin.c b/sysdeps/ieee754/dbl-64/e_asin.c
index eac3d27fd..6f4a3f8b4 100644
--- a/sysdeps/ieee754/dbl-64/e_asin.c
+++ b/sysdeps/ieee754/dbl-64/e_asin.c
@@ -327,11 +327,7 @@ __ieee754_asin(double x){
   else
   if (k>0x7ff00000 || (k == 0x7ff00000 && u.i[LOW_HALF] != 0)) return x + x;
   else {
-    u.i[HIGH_HALF]=0x7ff00000;
-    v.i[HIGH_HALF]=0x7ff00000;
-    u.i[LOW_HALF]=0;
-    v.i[LOW_HALF]=0;
-    return u.x/v.x;  /* NaN */
+    return (x-x)/(x-x);  /* NaN */
  }
 }
 #ifndef __ieee754_asin
@@ -637,11 +633,7 @@ __ieee754_acos(double x)
   else
   if (k>0x7ff00000 || (k == 0x7ff00000 && u.i[LOW_HALF] != 0)) return x + x;
   else {
-    u.i[HIGH_HALF]=0x7ff00000;
-    v.i[HIGH_HALF]=0x7ff00000;
-    u.i[LOW_HALF]=0;
-    v.i[LOW_HALF]=0;
-    return u.x/v.x;
+    return (x-x)/(x-x);
   }
 }
 #ifndef __ieee754_acos