diff --git a/moo/kernel/Magnitu.moo b/moo/kernel/Magnitu.moo
index 6a55bbd..a2e386c 100644
--- a/moo/kernel/Magnitu.moo
+++ b/moo/kernel/Magnitu.moo
@@ -247,7 +247,7 @@ class(#limited) Number(Magnitude)
 
 	method printStringRadix: aNumber
 	{
-		<primitive: #_integer_inttostr>
+		<primitive: #_number_numtostr>
 		self primitiveFailed.
 	}
 
diff --git a/moo/lib/exec.c b/moo/lib/exec.c
index e6b875d..09fd748 100644
--- a/moo/lib/exec.c
+++ b/moo/lib/exec.c
@@ -3013,6 +3013,26 @@ static moo_pfrc_t pf_number_ge (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
 	return MOO_PF_SUCCESS;
 }
 
+static moo_pfrc_t pf_number_numtostr (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
+{
+	moo_oop_t rcv, arg, str;
+	moo_ooi_t radix;
+
+	MOO_ASSERT (moo, nargs == 1);
+
+	rcv = MOO_STACK_GETRCV(moo, nargs);
+	arg = MOO_STACK_GETARG(moo, nargs, 0);
+
+	if (!MOO_OOP_IS_SMOOI(arg)) return MOO_PF_FAILURE;
+	radix = MOO_OOP_TO_SMOOI(arg);
+
+	if (radix < 2 || radix > 36) return MOO_PF_FAILURE;
+	str = moo_numtostr(moo, rcv, radix);
+	if (!str) return (moo->errnum == MOO_EINVAL? MOO_PF_FAILURE: MOO_PF_HARD_FAILURE);
+
+	MOO_STACK_SETRET (moo, nargs, str);
+	return MOO_PF_SUCCESS;
+}
 /* ------------------------------------------------------------------ */
 static moo_pfrc_t pf_integer_add (moo_t* moo, moo_mod_t* mod, moo_ooi_t nargs)
 {
@@ -3856,6 +3876,7 @@ static pf_t pftab[] =
 	{ "_number_mul",                           { pf_number_mul,                           1, 1 } },
 	{ "_number_ne",                            { pf_number_ne,                            1, 1 } },
 	{ "_number_negated",                       { pf_number_negated,                       0, 0 } },
+	{ "_number_numtostr",                      { pf_number_numtostr,                      1, 1 } },
 	{ "_number_sub",                           { pf_number_sub,                           1, 1 } },
 
 	{ "_utf8_seqlen",                          { moo_pf_utf8_seqlen,                      0, 0 } },
diff --git a/moo/lib/logfmt.c b/moo/lib/logfmt.c
index 4caf489..b913bca 100644
--- a/moo/lib/logfmt.c
+++ b/moo/lib/logfmt.c
@@ -421,6 +421,10 @@ static int print_object (moo_t* moo, moo_bitmask_t mask, moo_oop_t oop, outbfmt_
 		}
 		else if (c == moo->_fixed_point_decimal)
 		{
+#if 1
+			if (!moo_numtostr(moo, oop, 10 | MOO_NUMTOSTR_NONEWOBJ)) return -1;
+			if (outbfmt(moo, mask, "%.*js", moo->inttostr.xbuf.len, moo->inttostr.xbuf.ptr) <= -1) return -1;
+#else
 			moo_ooch_t* ptr;
 			moo_oow_t len;
 			moo_ooi_t scale;
@@ -453,6 +457,7 @@ static int print_object (moo_t* moo, moo_bitmask_t mask, moo_oop_t oop, outbfmt_
 			{
 				if (outbfmt(moo, mask, "%.*js.%.*js", len - scale, &ptr[0], scale, &ptr[len - scale]) <= -1) return -1;
 			}
+#endif
 		}
 		else if (MOO_OBJ_GET_FLAGS_TYPE(oop) == MOO_OBJ_TYPE_CHAR)
 		{
diff --git a/moo/lib/moo-prv.h b/moo/lib/moo-prv.h
index d91a014..e1ca445 100644
--- a/moo/lib/moo-prv.h
+++ b/moo/lib/moo-prv.h
@@ -1353,8 +1353,9 @@ moo_oop_t moo_strtoint (
 	int               radix
 );
 
-#define MOO_INTTOSTR_LOWERCASE (1 << 14)
-#define MOO_INTTOSTR_NONEWOBJ  (1 << 15)
+#define MOO_INTTOSTR_RADIXMASK (0xFF)
+#define MOO_INTTOSTR_LOWERCASE (1 << 8)
+#define MOO_INTTOSTR_NONEWOBJ  (1 << 9)
 
 moo_oop_t moo_inttostr (
 	moo_t*      moo,
@@ -1460,6 +1461,18 @@ moo_oop_t moo_absnum (
 	moo_oop_t    x
 );
 
+
+#define MOO_NUMTOSTR_RADIXMASK MOO_INTTOSTR_RADIXMASK
+#define MOO_NUMTOSTR_LOWERCASE MOO_INTTOSTR_LOWERCASE
+#define MOO_NUMTOSTR_NONEWOBJ MOO_INTTOSTR_NONEWOBJ
+
+moo_oop_t moo_numtostr (
+	moo_t*      moo,
+	moo_oop_t   num,
+	int         flagged_radix /* radix between 2 and 36 inclusive, optionally bitwise ORed of MOO_INTTOSTR_XXX bits */
+);
+
+
 /* ========================================================================= */
 /* logfmt.c                                                                  */
 /* ========================================================================= */
diff --git a/moo/lib/number.c b/moo/lib/number.c
index a28908a..4ed438b 100644
--- a/moo/lib/number.c
+++ b/moo/lib/number.c
@@ -440,3 +440,70 @@ moo_oop_t moo_absnum (moo_t* moo, moo_oop_t x)
 		return moo_makefpdec(moo, v, scale);
 	}
 }
+
+moo_oop_t moo_numtostr (moo_t* moo, moo_oop_t num, int flagged_radix)
+{
+	if (!MOO_OOP_IS_FPDEC(moo, num))
+	{
+		return moo_inttostr(moo, num, flagged_radix);
+	}
+	else
+	{
+		/* ignore radix for fixed-point decimal */
+		moo_ooch_t* ptr;
+		moo_oow_t len, inc, reqcapa;
+		moo_ooi_t scale;
+		int flags;
+
+		flags = 10 | (flagged_radix & ~MOO_INTTOSTR_RADIXMASK) | MOO_INTTOSTR_NONEWOBJ;
+		if (!moo_inttostr(moo, ((moo_oop_fpdec_t)num)->value, flags)) return MOO_NULL;
+
+		scale = MOO_OOP_TO_SMOOI(((moo_oop_fpdec_t)num)->scale);
+
+	start_over:
+		ptr = moo->inttostr.xbuf.ptr;
+		len = moo->inttostr.xbuf.len;
+		if (ptr[0] == '-')
+		{
+			ptr++;
+			len--;
+		}
+
+		inc = (scale >= len)? (scale - len + 2): 1;
+		reqcapa = moo->inttostr.xbuf.len + inc + 20000;
+		if (moo->inttostr.xbuf.capa < reqcapa)
+		{
+			moo_ooch_t* xbuf = (moo_ooch_t*)moo_reallocmem(moo, moo->inttostr.xbuf.ptr, reqcapa * MOO_SIZEOF(*xbuf));
+			if (!xbuf) return MOO_NULL;
+			moo->inttostr.xbuf.capa = reqcapa;
+			moo->inttostr.xbuf.ptr = xbuf;
+			goto start_over;
+		}
+
+		if (scale >= len)
+		{
+			moo_oow_t i, j;
+			MOO_MEMMOVE (&ptr[inc], ptr, len * MOO_SIZEOF(*ptr));
+			ptr[0] = '0';
+			ptr[1] = '.';
+			for (i = len, j = 2; i < scale; i++) ptr[j++] = '0';
+		}
+		else
+		{
+			moo_oow_t pos;
+			pos = len - scale;
+			MOO_MEMMOVE (&ptr[pos + 1], &ptr[pos], scale * MOO_SIZEOF(*ptr));
+			ptr[pos] = '.'; /* squeeze in the fixed point */
+		}
+		moo->inttostr.xbuf.len += inc;
+
+		if (flagged_radix & MOO_INTTOSTR_NONEWOBJ)
+		{
+			/* special case. don't create a new object.
+			* the caller can use the data left in moo->inttostr.xbuf */
+			return moo->_nil;
+		}
+
+		return moo_makestring(moo, moo->inttostr.xbuf.ptr, moo->inttostr.xbuf.len);
+	}
+}