Patch taken from the Sage packaging system.

--- src/include/Lcommon.h	2010-01-31 15:16:45.000000000 +0000
+++ src/include/Lcommon.h	2011-03-08 21:19:11.849443238 +0000
@@ -25,7 +25,7 @@
 #ifdef USE_MPFR
 inline double lcalc_to_double(const double& x) { return x; }
 #endif
-//inline double lcalc_to_double(const long double& x) { return x; }
+inline double lcalc_to_double(const long double& x) { return x; }
 inline double lcalc_to_double(const int& x) { return x; }
 inline double lcalc_to_double(const long long& x) { return x; }
 inline double lcalc_to_double(const short& x) { return x; }
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<tr><td><span title='2024-04-17 12:13:01 +0200'>2024-04-17</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=d33965908dc8e21e9c9834ce1061cdcc664295ab'>vm: Always use a native emulator in ‘guix system vm’.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2024-03-31 22:28:11 +0200'>2024-03-31</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=16c713083516e60b5ae30b3a8b49d5bf8d4cadc3'>vm: If not the same local architecture, don't enable kvm.</a><span class='msg-avail'>...</span></td><td>Zheng Junjie</td></tr>
<tr><td><span title='2024-03-31 22:28:01 +0200'>2024-03-31</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=e6241de15a2aa04efc99769d768849240eaffea5'>vm: add arguments to use virt machine type for qemu-riscv64.</a><span class='msg-avail'>...</span></td><td>Zheng Junjie</td></tr>
<tr><td><span title='2024-03-31 22:27:02 +0200'>2024-03-31</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=ad9832f82e525834db2221ae462f2b7a6709fc05'>vm: When target riscv64-linux, use u-boot-qemu-riscv64-bootloader.</a><span class='msg-avail'>...</span></td><td>Zheng Junjie</td></tr>
<tr><td><span title='2024-03-31 22:26:27 +0200'>2024-03-31</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=a5deb90fd45872e0f4e3c2446b9848e1ea592068'>vm: use #$ for kernel-arguments.</a><span class='msg-avail'>...</span></td><td>Zheng Junjie</td></tr>
<tr><td><span title='2024-02-10 23:21:07 +0100'>2024-02-10</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=9edbb2d7a40c9da7583a1046e39b87633459f656'>services: Add ‘virtual-build-machine’ service.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2024-02-10 22:59:52 +0100'>2024-02-10</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=b0a5c0742f7e5cf0df4c0f20dbbb720df1311a70'>vm: Add ‘cpu-count’ field to &lt;virtual-machine&gt;.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2024-02-10 22:59:49 +0100'>2024-02-10</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=7a4f585ae1875b1bee29e1f106c7af5ca0cd057d'>vm: Export &lt;virtual-machine&gt; accessors.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2024-02-10 22:59:46 +0100'>2024-02-10</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=f7447b1a32c5dc79d34a6bc9e66cca03ecb5cf56'>vm: Add ‘date’ field to &lt;virtual-machine&gt;.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-10-29 02:00:00 +0200'>2023-10-29</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=2059b9fbe0712e070b6e438b91484c170bf599ff'>system: vm: Include the cirrus driver in the initrd.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-10-01 22:58:18 +0200'>2023-10-01</span></td><td><a href='/guix/commit/gnu/system/vm.scm?id=f5c3f8e59e266f9fef629fb6a86a133fbc92a537'>system: vm: Remove unused variable.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>