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authormrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2013-11-23 10:36:40 +0000
committermrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2013-11-23 10:36:40 +0000
commit926960b01b07d0b35f7275f8ad73be85fdf319aa (patch)
tree195380e17c6ad4f6974e95361dc4b7071d5c3aae /ext/bigdecimal/bigdecimal.c
parentc5a919fb3bb88f69dbcb0cc3a21cdd8f178edf29 (diff)
* ext/bigdecimal/bigdecimal.c (BigDecimal_div2): The signature was
changed to allow us to pass arguments directly. * ext/bigdecimal/bigdecimal.c (BigDecimal_div3): Added for the role of the old BigDecimal_div2. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43815 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/bigdecimal/bigdecimal.c')
-rw-r--r--ext/bigdecimal/bigdecimal.c103
1 files changed, 52 insertions, 51 deletions
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index f630c0a..ab0fafb 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -190,13 +190,13 @@ cannot_be_coerced_into_BigDecimal(VALUE exc_class, VALUE v)
rb_exc_raise(rb_exc_new3(exc_class, str));
}
-static VALUE BigDecimal_div2(int, VALUE*, VALUE);
+static inline VALUE BigDecimal_div2(VALUE, VALUE, VALUE);
static Real*
GetVpValueWithPrec(VALUE v, long prec, int must)
{
Real *pv;
- VALUE num, bg, args[2];
+ VALUE num, bg;
char szD[128];
VALUE orig = Qundef;
@@ -215,9 +215,7 @@ again:
pv = GetVpValueWithPrec(num, -1, must);
if (pv == NULL) goto SomeOneMayDoIt;
- args[0] = RRATIONAL(v)->den;
- args[1] = LONG2NUM(prec);
- v = BigDecimal_div2(2, args, ToValue(pv));
+ v = BigDecimal_div2(ToValue(pv), RRATIONAL(v)->den, LONG2NUM(prec));
goto again;
}
@@ -1456,40 +1454,53 @@ BigDecimal_divmod(VALUE self, VALUE r)
/*
* See BigDecimal#quo
*/
-static VALUE
-BigDecimal_div2(int argc, VALUE *argv, VALUE self)
+static inline VALUE
+BigDecimal_div2(VALUE self, VALUE b, VALUE n)
{
ENTER(5);
- VALUE b,n;
- int na = rb_scan_args(argc, argv, "11", &b, &n);
- if (na == 1) { /* div in Float sense */
- Real *div = NULL;
- Real *mod;
- if (BigDecimal_DoDivmod(self, b, &div, &mod)) {
- return BigDecimal_to_i(ToValue(div));
- }
- return DoSomeOne(self, b, rb_intern("div"));
- } else { /* div in BigDecimal sense */
- SIGNED_VALUE ix = GetPositiveInt(n);
- if (ix == 0) return BigDecimal_div(self, b);
- else {
- Real *res = NULL;
- Real *av = NULL, *bv = NULL, *cv = NULL;
- size_t mx = ix + VpBaseFig()*2;
- size_t pl = VpSetPrecLimit(0);
+ SIGNED_VALUE ix;
- GUARD_OBJ(cv, VpCreateRbObject(mx, "0"));
- GUARD_OBJ(av, GetVpValue(self, 1));
- GUARD_OBJ(bv, GetVpValue(b, 1));
- mx = av->Prec + bv->Prec + 2;
- if (mx <= cv->MaxPrec) mx = cv->MaxPrec + 1;
- GUARD_OBJ(res, VpCreateRbObject((mx * 2 + 2)*VpBaseFig(), "#0"));
- VpDivd(cv, res, av, bv);
- VpSetPrecLimit(pl);
- VpLeftRound(cv, VpGetRoundMode(), ix);
- return ToValue(cv);
- }
+ if (NIL_P(n)) { /* div in Float sense */
+ Real *div = NULL;
+ Real *mod;
+ if (BigDecimal_DoDivmod(self, b, &div, &mod)) {
+ return BigDecimal_to_i(ToValue(div));
+ }
+ return DoSomeOne(self, b, rb_intern("div"));
}
+
+ /* div in BigDecimal sense */
+ ix = GetPositiveInt(n);
+ if (ix == 0) {
+ return BigDecimal_div(self, b);
+ }
+ else {
+ Real *res = NULL;
+ Real *av = NULL, *bv = NULL, *cv = NULL;
+ size_t mx = ix + VpBaseFig()*2;
+ size_t pl = VpSetPrecLimit(0);
+
+ GUARD_OBJ(cv, VpCreateRbObject(mx, "0"));
+ GUARD_OBJ(av, GetVpValue(self, 1));
+ GUARD_OBJ(bv, GetVpValue(b, 1));
+ mx = av->Prec + bv->Prec + 2;
+ if (mx <= cv->MaxPrec) mx = cv->MaxPrec + 1;
+ GUARD_OBJ(res, VpCreateRbObject((mx * 2 + 2)*VpBaseFig(), "#0"));
+ VpDivd(cv, res, av, bv);
+ VpSetPrecLimit(pl);
+ VpLeftRound(cv, VpGetRoundMode(), ix);
+ return ToValue(cv);
+ }
+}
+
+static VALUE
+BigDecimal_div3(int argc, VALUE *argv, VALUE self)
+{
+ VALUE b,n;
+
+ rb_scan_args(argc, argv, "11", &b, &n);
+
+ return BigDecimal_div2(self, b, n);
}
static VALUE
@@ -2747,7 +2758,6 @@ BigMath_s_exp(VALUE klass, VALUE x, VALUE vprec)
i = 0;
while (!VpIsZero((Real*)DATA_PTR(d))) {
- VALUE argv[2];
SIGNED_VALUE const ey = VpExponent10(DATA_PTR(y));
SIGNED_VALUE const ed = VpExponent10(DATA_PTR(d));
ssize_t m = n - vabs(ey - ed);
@@ -2764,17 +2774,12 @@ BigMath_s_exp(VALUE klass, VALUE x, VALUE vprec)
x1 = BigDecimal_mult2(x1, x, SSIZET2NUM(n));
++i;
z = BigDecimal_mult(z, SSIZET2NUM(i));
- argv[0] = z;
- argv[1] = SSIZET2NUM(m);
- d = BigDecimal_div2(2, argv, x1);
+ d = BigDecimal_div2(x1, z, SSIZET2NUM(m));
y = BigDecimal_add(y, d);
}
if (negative) {
- VALUE argv[2];
- argv[0] = y;
- argv[1] = vprec;
- return BigDecimal_div2(2, argv, one);
+ return BigDecimal_div2(one, y, vprec);
}
else {
vprec = SSIZET2NUM(prec - VpExponent10(DATA_PTR(y)));
@@ -2807,7 +2812,7 @@ BigMath_s_log(VALUE klass, VALUE x, VALUE vprec)
ssize_t prec, n, i;
SIGNED_VALUE expo;
Real* vx = NULL;
- VALUE argv[2], vn, one, two, w, x2, y, d;
+ VALUE vn, one, two, w, x2, y, d;
int zero = 0;
int negative = 0;
int infinite = 0;
@@ -2913,9 +2918,7 @@ get_vp_value:
expo = 0;
}
w = BigDecimal_sub(x, one);
- argv[0] = BigDecimal_add(x, one);
- argv[1] = vn;
- x = BigDecimal_div2(2, argv, w);
+ x = BigDecimal_div2(w, BigDecimal_add(x, one), vn);
RB_GC_GUARD(x2) = BigDecimal_mult2(x, x, vn);
RB_GC_GUARD(y) = x;
RB_GC_GUARD(d) = y;
@@ -2933,9 +2936,7 @@ get_vp_value:
x = BigDecimal_mult2(x2, x, vn);
i += 2;
- argv[0] = SSIZET2NUM(i);
- argv[1] = SSIZET2NUM(m);
- d = BigDecimal_div2(2, argv, x);
+ d = BigDecimal_div2(x, SSIZET2NUM(i), SSIZET2NUM(m));
y = BigDecimal_add(y, d);
}
@@ -3214,7 +3215,7 @@ Init_bigdecimal(void)
rb_define_method(rb_cBigDecimal, "add", BigDecimal_add2, 2);
rb_define_method(rb_cBigDecimal, "sub", BigDecimal_sub2, 2);
rb_define_method(rb_cBigDecimal, "mult", BigDecimal_mult2, 2);
- rb_define_method(rb_cBigDecimal, "div", BigDecimal_div2, -1);
+ rb_define_method(rb_cBigDecimal, "div", BigDecimal_div3, -1);
rb_define_method(rb_cBigDecimal, "hash", BigDecimal_hash, 0);
rb_define_method(rb_cBigDecimal, "to_s", BigDecimal_to_s, -1);
rb_define_method(rb_cBigDecimal, "to_i", BigDecimal_to_i, 0);