--- _hdtoa.c.orig 2006-01-31 15:21:41.000000000 -0800
+++ _hdtoa.c 2006-01-31 23:37:12.000000000 -0800
@@ -223,6 +223,10 @@
union IEEEl2bits u;
char *s, *s0;
int bufsize;
+#ifdef LDBL_HEAD_TAIL_PAIR
+ uint32_t bits[4];
+ int i, pos;
+#endif /* LDBL_HEAD_TAIL_PAIR */
u.e = e;
*sign = u.bits.sign;
@@ -270,6 +274,19 @@
*/
for (s = s0 + bufsize - 1; s > s0 + sigfigs - 1; s--)
*s = 0;
+#ifdef LDBL_HEAD_TAIL_PAIR
+ _ldbl2array32dd(u, bits);
+ i = 0;
+ pos = 8;
+ for (; s > s0; s--) {
+ *s = bits[i] & 0xf;
+ bits[i] >>= 4;
+ if (--pos <= 0) {
+ i++;
+ pos = 8;
+ }
+ }
+#else /* LDBL_HEAD_TAIL_PAIR */
for (; s > s0 + sigfigs - (LDBL_MANL_SIZE / 4) - 1 && s > s0; s--) {
*s = u.bits.manl & 0xf;
u.bits.manl >>= 4;
@@ -278,6 +295,7 @@
*s = u.bits.manh & 0xf;
u.bits.manh >>= 4;
}
+#endif /* LDBL_HEAD_TAIL_PAIR */
/*
* At this point, we have snarfed all the bits in the
@@ -285,7 +303,11 @@
* (partial) nibble, which is dealt with by the next
* statement. We also tack on the implicit normalization bit.
*/
+#ifdef LDBL_HEAD_TAIL_PAIR
+ *s = bits[i];
+#else /* LDBL_HEAD_TAIL_PAIR */
*s = u.bits.manh | (1U << ((LDBL_MANT_DIG - 1) % 4));
+#endif /* LDBL_HEAD_TAIL_PAIR */
/* If ndigits < 0, we are expected to auto-size the precision. */
if (ndigits < 0) {