[PR PATCH] arb: update to 2.21.1.

[tornaria <tornaria@users.noreply.github.com>]

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There is a new pull request by tornaria against master on the void-packages repository

https://github.com/tornaria/void-packages arb
https://github.com/void-linux/void-packages/pull/33778

arb: update to 2.21.1.
I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- removes a patch which was included upstream

A patch file from https://github.com/void-linux/void-packages/pull/33778.patch is attached

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From c5f855b0aab8b4079acea5bf9d515155350161eb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gonzalo=20Tornar=C3=ADa?= <tornaria@cmat.edu.uy>
Date: Tue, 26 Oct 2021 23:27:14 -0300
Subject: [PATCH] arb: update to 2.21.1.

---
 ...35a84a40acc1871cd84f1caf2ea47c11a18c.patch | 73 -------------------
 srcpkgs/arb/template                          |  4 +-
 2 files changed, 2 insertions(+), 75 deletions(-)
 delete mode 100644 srcpkgs/arb/patches/450435a84a40acc1871cd84f1caf2ea47c11a18c.patch

diff --git a/srcpkgs/arb/patches/450435a84a40acc1871cd84f1caf2ea47c11a18c.patch b/srcpkgs/arb/patches/450435a84a40acc1871cd84f1caf2ea47c11a18c.patch
deleted file mode 100644
index 179ba8887f32..000000000000
--- a/srcpkgs/arb/patches/450435a84a40acc1871cd84f1caf2ea47c11a18c.patch
+++ /dev/null
@@ -1,73 +0,0 @@
-From 450435a84a40acc1871cd84f1caf2ea47c11a18c Mon Sep 17 00:00:00 2001
-From: fredrik <fredrik.johansson@gmail.com>
-Date: Tue, 28 Sep 2021 12:07:45 +0200
-Subject: [PATCH] fix (hopefully) spurious test failures for gamma_fmpq
-
----
- arb_hypgeom/gamma_fmpq.c | 16 ++++++++--------
- 1 file changed, 8 insertions(+), 8 deletions(-)
-
-diff --git a/arb_hypgeom/gamma_fmpq.c b/arb_hypgeom/gamma_fmpq.c
-index 996a87e5..ee750d0d 100644
---- a/arb_hypgeom/gamma_fmpq.c
-+++ b/arb_hypgeom/gamma_fmpq.c
-@@ -529,22 +529,22 @@ arb_hypgeom_gamma_fmpq_outward(arb_t y, const fmpq_t x, slong prec)
- 
-     if (q == 1 || q == 2 || q == 3 || q == 4 || q == 6)
-     {
--        arb_hypgeom_gamma_small_frac(t, p, q, prec);
-+        arb_hypgeom_gamma_small_frac(t, p, q, prec + 4 * (m != 0));
-     }
-     else
-     {
--        arb_hypgeom_gamma_fmpq_hyp(t, a, prec);
-+        arb_hypgeom_gamma_fmpq_hyp(t, a, prec + 4 * (m != 0));
-     }
- 
-     /* argument reduction */
-     if (m >= 0)
-     {
--        arb_rising_fmpq_ui(u, a, m, prec);
-+        arb_rising_fmpq_ui(u, a, m, prec + 4);
-         arb_mul(y, t, u, prec);
-     }
-     else
-     {
--        arb_rising_fmpq_ui(u, x, -m, prec);
-+        arb_rising_fmpq_ui(u, x, -m, prec + 4);
-         arb_div(y, t, u, prec);
-     }
- 
-@@ -602,7 +602,7 @@ arb_hypgeom_gamma_fmpq_taylor(arb_t y, const fmpq_t x, slong prec)
-     }
- 
-     arb_set_fmpq(t, a, prec + 4);
--    success = arb_hypgeom_gamma_taylor(t, t, 0, prec);
-+    success = arb_hypgeom_gamma_taylor(t, t, 0, prec + 4);
- 
-     if (success)
-     {
-@@ -611,12 +611,12 @@ arb_hypgeom_gamma_fmpq_taylor(arb_t y, const fmpq_t x, slong prec)
- 
-         if (m >= 0)
-         {
--            arb_rising_fmpq_ui(u, a, m, prec);
-+            arb_rising_fmpq_ui(u, a, m, prec + 4);
-             arb_mul(y, t, u, prec);
-         }
-         else
-         {
--            arb_rising_fmpq_ui(u, x, -m, prec);
-+            arb_rising_fmpq_ui(u, x, -m, prec + 4);
-             arb_div(y, t, u, prec);
-         }
- 
-@@ -684,7 +684,7 @@ arb_hypgeom_gamma_fmpq(arb_t y, const fmpq_t x, slong prec)
-         wp = (slong) fmpz_bits(fmpq_numref(x)) - (slong) fmpz_bits(fmpq_denref(x));
-         wp = FLINT_MAX(wp, 0);
-         wp = FLINT_MIN(wp, 4 * prec);
--        wp += prec;
-+        wp += prec + 4;
- 
-         arb_set_fmpq(y, x, wp);
- 
diff --git a/srcpkgs/arb/template b/srcpkgs/arb/template
index 2c6981319352..e3af7bce0420 100644
--- a/srcpkgs/arb/template
+++ b/srcpkgs/arb/template
@@ -1,6 +1,6 @@
 # Template file for 'arb'
 pkgname=arb
-version=2.21.0
+version=2.21.1
 revision=1
 build_style=configure
 configure_args="--prefix=/usr --with-gmp=/usr --with-mpfr=/usr --with-flint=/usr"
@@ -10,7 +10,7 @@ maintainer="Gonzalo Tornaría <tornaria@cmat.edu.uy>"
 license="LGPL-2.1-or-later"
 homepage="https://arblib.org"
 distfiles="https://github.com/fredrik-johansson/arb/archive/${version}.tar.gz"
-checksum=6493ebcfb1772458db4ca66da4c5536968484a3815cf75d2bb33c600b4471910
+checksum=aecc9f55eb35a00a2490e9a7536a0babf8ac86bb13d32a4a95e1216f9f5cbfa8
 
 CFLAGS="-D_GNU_SOURCE" # needed for cpu_set_t