Patch to shrink mpi-int to three words on 32 bit platforms,

so that obj_t stays four pointers wide.

* mpi-patches/series: New patch added.

* mpi-patches/shrink-mpi-int: New file.

1 files changed, 20 insertions, 0 deletions

diff --git a/mpi-patches/shrink-mpi-int b/mpi-patches/shrink-mpi-int
new file mode 100644
index 00000000..b1b03aa9
--- /dev/null
+++ b/mpi-patches/shrink-mpi-int
@@ -0,0 +1,20 @@
+Index: mpi-1.8.6/mpi.h
+===================================================================
+--- mpi-1.8.6.orig/mpi.h	2011-12-13 09:35:31.000000000 -0800
++++ mpi-1.8.6/mpi.h	2011-12-13 09:40:01.000000000 -0800
+@@ -72,8 +72,13 @@
+ #define MAX_RADIX         64
+ 
+ typedef struct {
+-  mp_sign       sign;    /* sign of this quantity      */
+-  mp_size       alloc;   /* how many digits allocated  */
++#if SIZEOF_INT >= SIZEOF_PTR
++  unsigned int  sign : 1;                  /* sign of this quantity      */
++  unsigned int  alloc : sizeof(int) - 1;   /* how many digits allocated  */
++#else
++  mp_sign       sign;
++  mp_size       alloc;
++#endif
+   mp_size       used;    /* how many digits used       */
+   mp_digit     *dp;      /* the digits themselves      */
+ } mp_int;