[seed] [mpfr] Added mpfr.mul_2si

[Tim Horton <hortont src gnome org>]

commit ebfee4e5c63cfd8be80e3a1f1f1048a0c9e30421
Author: Matt ARSENAULT <arsenm2 rpi edu>
Date:   Wed Jul 8 19:00:15 2009 -0400

    [mpfr] Added mpfr.mul_2si

 modules/mpfr/seed-mpfr-arithmetic.c |   40 +++++++++++++++++++++++++++++++++++
 modules/mpfr/seed-mpfr.c            |    1 +
 modules/mpfr/seed-mpfr.h            |    1 +
 3 files changed, 42 insertions(+), 0 deletions(-)
---
diff --git a/modules/mpfr/seed-mpfr-arithmetic.c b/modules/mpfr/seed-mpfr-arithmetic.c
index f06758c..f874bd7 100644
--- a/modules/mpfr/seed-mpfr-arithmetic.c
+++ b/modules/mpfr/seed-mpfr-arithmetic.c
@@ -1170,3 +1170,43 @@ SeedValue seed_mpfr_copysign (SeedContext ctx,
     return seed_value_from_int(ctx, ret, exception);
 }
 
+SeedValue seed_mpfr_mul_2si (SeedContext ctx,
+                             SeedObject function,
+                             SeedObject this_object,
+                             gsize argument_count,
+                             const SeedValue args[],
+                             SeedException * exception)
+{
+    mpfr_rnd_t rnd;
+    mpfr_ptr rop, op;
+    gint ret;
+    gulong k;
+
+    CHECK_ARG_COUNT("mpfr.mul_2si", 3);
+
+    rop = seed_object_get_private(this_object);
+    rnd = seed_value_to_mpfr_rnd_t(ctx, args[2], exception);
+
+    if ( seed_value_is_object_of_class(ctx, args[0], mpfr_class) )
+    {
+        op = seed_object_get_private(args[0]);
+    }
+    else
+    {
+        TYPE_EXCEPTION("mpfr.mul_2si", "mpfr_t");
+    }
+
+    if ( seed_value_is_number(ctx, args[1]) )
+    {
+        k = seed_value_to_ulong(ctx, args[1], exception);
+    }
+    else
+    {
+        TYPE_EXCEPTION("mpfr.mul_2si", "long int");
+    }
+
+    ret = mpfr_mul_2si(rop, op, k, rnd);
+
+    return seed_value_from_int(ctx, ret, exception);
+}
+
diff --git a/modules/mpfr/seed-mpfr.c b/modules/mpfr/seed-mpfr.c
index 02adc97..e092a60 100644
--- a/modules/mpfr/seed-mpfr.c
+++ b/modules/mpfr/seed-mpfr.c
@@ -993,6 +993,7 @@ seed_static_function mpfr_funcs[] =
     {"sqrt", seed_mpfr_sqrt, 0},
     {"sqr", seed_mpfr_sqr, 0},
     {"pow", seed_mpfr_pow, 0},
+    {"mul_2si", seed_mpfr_mul_2si, 0},
     {"root", seed_mpfr_root, 0},
     {"rec_sqrt", seed_mpfr_rec_sqrt, 0},
     {"cbrt", seed_mpfr_cbrt, 0},
diff --git a/modules/mpfr/seed-mpfr.h b/modules/mpfr/seed-mpfr.h
index b66a3ef..33e1ffc 100644
--- a/modules/mpfr/seed-mpfr.h
+++ b/modules/mpfr/seed-mpfr.h
@@ -125,6 +125,7 @@ DEF_SEED_MPFR_FUNC(seed_mpfr_pow);
 DEF_SEED_MPFR_FUNC(seed_mpfr_root);
 DEF_SEED_MPFR_FUNC(seed_mpfr_rec_sqrt);
 DEF_SEED_MPFR_FUNC(seed_mpfr_cbrt);
+DEF_SEED_MPFR_FUNC(seed_mpfr_mul_2si);
 
 DEF_SEED_MPFR_FUNC(seed_mpfr_cmp);
 DEF_SEED_MPFR_FUNC(seed_mpfr_cmpabs);