|
|
|
# commit 9605ca6c085a749f29b6866a3e00bce1ba1a2698
|
|
|
|
# Author: Alan Modra <amodra@gmail.com>
|
|
|
|
# Date: Sat Aug 17 18:12:56 2013 +0930
|
|
|
|
#
|
|
|
|
# IBM long double mechanical changes to support little-endian
|
|
|
|
# http://sourceware.org/ml/libc-alpha/2013-07/msg00001.html
|
|
|
|
#
|
|
|
|
# This patch starts the process of supporting powerpc64 little-endian
|
|
|
|
# long double in glibc. IBM long double is an array of two ieee
|
|
|
|
# doubles, so making union ibm_extended_long_double reflect this fact is
|
|
|
|
# the correct way to access fields of the doubles.
|
|
|
|
#
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/ieee754.h
|
|
|
|
# (union ibm_extended_long_double): Define as an array of ieee754_double.
|
|
|
|
# (IBM_EXTENDED_LONG_DOUBLE_BIAS): Delete.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Update all references
|
|
|
|
# to ibm_extended_long_double and IBM_EXTENDED_LONG_DOUBLE_BIAS.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/e_exp10l.c: Likewise.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/e_expl.c: Likewise.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c: Likewise.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/math_ldbl.h: Likewise.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c: Likewise.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c: Likewise.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/strtold_l.c: Likewise.
|
|
|
|
# * sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c: Likewise.
|
|
|
|
#
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/e_exp10l.c glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/e_exp10l.c
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/e_exp10l.c 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/e_exp10l.c 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -36,9 +36,9 @@
|
|
|
|
else if (arg > LDBL_MAX_10_EXP + 1)
|
|
|
|
return LDBL_MAX * LDBL_MAX;
|
|
|
|
|
|
|
|
- u.d = arg;
|
|
|
|
- arg_high = u.dd[0];
|
|
|
|
- arg_low = u.dd[1];
|
|
|
|
+ u.ld = arg;
|
|
|
|
+ arg_high = u.d[0].d;
|
|
|
|
+ arg_low = u.d[1].d;
|
|
|
|
exp_high = arg_high * log10_high;
|
|
|
|
exp_low = arg_high * log10_low + arg_low * M_LN10l;
|
|
|
|
return __ieee754_expl (exp_high) * __ieee754_expl (exp_low);
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/e_expl.c glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/e_expl.c
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/e_expl.c 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/e_expl.c 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -162,39 +162,39 @@
|
|
|
|
x = x + xl;
|
|
|
|
|
|
|
|
/* Compute ex2 = 2^n_0 e^(argtable[tval1]) e^(argtable[tval2]). */
|
|
|
|
- ex2_u.d = __expl_table[T_EXPL_RES1 + tval1]
|
|
|
|
- * __expl_table[T_EXPL_RES2 + tval2];
|
|
|
|
+ ex2_u.ld = (__expl_table[T_EXPL_RES1 + tval1]
|
|
|
|
+ * __expl_table[T_EXPL_RES2 + tval2]);
|
|
|
|
n_i = (int)n;
|
|
|
|
/* 'unsafe' is 1 iff n_1 != 0. */
|
|
|
|
unsafe = fabsl(n_i) >= -LDBL_MIN_EXP - 1;
|
|
|
|
- ex2_u.ieee.exponent += n_i >> unsafe;
|
|
|
|
+ ex2_u.d[0].ieee.exponent += n_i >> unsafe;
|
|
|
|
/* Fortunately, there are no subnormal lowpart doubles in
|
|
|
|
__expl_table, only normal values and zeros.
|
|
|
|
But after scaling it can be subnormal. */
|
|
|
|
- exponent2 = ex2_u.ieee.exponent2 + (n_i >> unsafe);
|
|
|
|
- if (ex2_u.ieee.exponent2 == 0)
|
|
|
|
- /* assert ((ex2_u.ieee.mantissa2|ex2_u.ieee.mantissa3) == 0) */;
|
|
|
|
+ exponent2 = ex2_u.d[1].ieee.exponent + (n_i >> unsafe);
|
|
|
|
+ if (ex2_u.d[1].ieee.exponent == 0)
|
|
|
|
+ /* assert ((ex2_u.d[1].ieee.mantissa0|ex2_u.d[1].ieee.mantissa1) == 0) */;
|
|
|
|
else if (exponent2 > 0)
|
|
|
|
- ex2_u.ieee.exponent2 = exponent2;
|
|
|
|
+ ex2_u.d[1].ieee.exponent = exponent2;
|
|
|
|
else if (exponent2 <= -54)
|
|
|
|
{
|
|
|
|
- ex2_u.ieee.exponent2 = 0;
|
|
|
|
- ex2_u.ieee.mantissa2 = 0;
|
|
|
|
- ex2_u.ieee.mantissa3 = 0;
|
|
|
|
+ ex2_u.d[1].ieee.exponent = 0;
|
|
|
|
+ ex2_u.d[1].ieee.mantissa0 = 0;
|
|
|
|
+ ex2_u.d[1].ieee.mantissa1 = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
static const double
|
|
|
|
two54 = 1.80143985094819840000e+16, /* 4350000000000000 */
|
|
|
|
twom54 = 5.55111512312578270212e-17; /* 3C90000000000000 */
|
|
|
|
- ex2_u.dd[1] *= two54;
|
|
|
|
- ex2_u.ieee.exponent2 += n_i >> unsafe;
|
|
|
|
- ex2_u.dd[1] *= twom54;
|
|
|
|
+ ex2_u.d[1].d *= two54;
|
|
|
|
+ ex2_u.d[1].ieee.exponent += n_i >> unsafe;
|
|
|
|
+ ex2_u.d[1].d *= twom54;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Compute scale = 2^n_1. */
|
|
|
|
- scale_u.d = 1.0L;
|
|
|
|
- scale_u.ieee.exponent += n_i - (n_i >> unsafe);
|
|
|
|
+ scale_u.ld = 1.0L;
|
|
|
|
+ scale_u.d[0].ieee.exponent += n_i - (n_i >> unsafe);
|
|
|
|
|
|
|
|
/* Approximate e^x2 - 1, using a seventh-degree polynomial,
|
|
|
|
with maximum error in [-2^-16-2^-53,2^-16+2^-53]
|
|
|
|
@@ -204,7 +204,7 @@
|
|
|
|
/* Return result. */
|
|
|
|
fesetenv (&oldenv);
|
|
|
|
|
|
|
|
- result = x22 * ex2_u.d + ex2_u.d;
|
|
|
|
+ result = x22 * ex2_u.ld + ex2_u.ld;
|
|
|
|
|
|
|
|
/* Now we can test whether the result is ultimate or if we are unsure.
|
|
|
|
In the later case we should probably call a mpn based routine to give
|
|
|
|
@@ -238,7 +238,7 @@
|
|
|
|
if (!unsafe)
|
|
|
|
return result;
|
|
|
|
else
|
|
|
|
- return result * scale_u.d;
|
|
|
|
+ return result * scale_u.ld;
|
|
|
|
}
|
|
|
|
/* Exceptional cases: */
|
|
|
|
else if (isless (x, himark))
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/ieee754.h glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/ieee754.h
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/ieee754.h 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/ieee754.h 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -180,29 +180,9 @@
|
|
|
|
|
|
|
|
union ibm_extended_long_double
|
|
|
|
{
|
|
|
|
- long double d;
|
|
|
|
- double dd[2];
|
|
|
|
-
|
|
|
|
- /* This is the IBM extended format long double. */
|
|
|
|
- struct
|
|
|
|
- { /* Big endian. There is no other. */
|
|
|
|
-
|
|
|
|
- unsigned int negative:1;
|
|
|
|
- unsigned int exponent:11;
|
|
|
|
- /* Together Mantissa0-3 comprise the mantissa. */
|
|
|
|
- unsigned int mantissa0:20;
|
|
|
|
- unsigned int mantissa1:32;
|
|
|
|
-
|
|
|
|
- unsigned int negative2:1;
|
|
|
|
- unsigned int exponent2:11;
|
|
|
|
- /* There is an implied 1 here? */
|
|
|
|
- /* Together these comprise the mantissa. */
|
|
|
|
- unsigned int mantissa2:20;
|
|
|
|
- unsigned int mantissa3:32;
|
|
|
|
- } ieee;
|
|
|
|
- };
|
|
|
|
-
|
|
|
|
-#define IBM_EXTENDED_LONG_DOUBLE_BIAS 0x3ff /* Added to exponent. */
|
|
|
|
+ long double ld;
|
|
|
|
+ union ieee754_double d[2];
|
|
|
|
+ };
|
|
|
|
|
|
|
|
__END_DECLS
|
|
|
|
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -36,22 +36,22 @@
|
|
|
|
union ibm_extended_long_double u;
|
|
|
|
unsigned long long hi, lo;
|
|
|
|
int ediff;
|
|
|
|
- u.d = value;
|
|
|
|
+ u.ld = value;
|
|
|
|
|
|
|
|
- *is_neg = u.ieee.negative;
|
|
|
|
- *expt = (int) u.ieee.exponent - IBM_EXTENDED_LONG_DOUBLE_BIAS;
|
|
|
|
+ *is_neg = u.d[0].ieee.negative;
|
|
|
|
+ *expt = (int) u.d[0].ieee.exponent - IEEE754_DOUBLE_BIAS;
|
|
|
|
|
|
|
|
- lo = ((long long) u.ieee.mantissa2 << 32) | u.ieee.mantissa3;
|
|
|
|
- hi = ((long long) u.ieee.mantissa0 << 32) | u.ieee.mantissa1;
|
|
|
|
+ lo = ((long long) u.d[1].ieee.mantissa0 << 32) | u.d[1].ieee.mantissa1;
|
|
|
|
+ hi = ((long long) u.d[0].ieee.mantissa0 << 32) | u.d[0].ieee.mantissa1;
|
|
|
|
/* If the lower double is not a denomal or zero then set the hidden
|
|
|
|
53rd bit. */
|
|
|
|
- if (u.ieee.exponent2 > 0)
|
|
|
|
+ if (u.d[1].ieee.exponent > 0)
|
|
|
|
{
|
|
|
|
lo |= 1LL << 52;
|
|
|
|
|
|
|
|
/* The lower double is normalized separately from the upper. We may
|
|
|
|
need to adjust the lower manitissa to reflect this. */
|
|
|
|
- ediff = u.ieee.exponent - u.ieee.exponent2;
|
|
|
|
+ ediff = u.d[0].ieee.exponent - u.d[1].ieee.exponent;
|
|
|
|
if (ediff > 53)
|
|
|
|
lo = lo >> (ediff-53);
|
|
|
|
}
|
|
|
|
@@ -59,8 +59,8 @@
|
|
|
|
difference between the long double and the rounded high double
|
|
|
|
value. This is indicated by a differnce between the signs of the
|
|
|
|
high and low doubles. */
|
|
|
|
- if ((u.ieee.negative != u.ieee.negative2)
|
|
|
|
- && ((u.ieee.exponent2 != 0) && (lo != 0L)))
|
|
|
|
+ if ((u.d[0].ieee.negative != u.d[1].ieee.negative)
|
|
|
|
+ && ((u.d[1].ieee.exponent != 0) && (lo != 0L)))
|
|
|
|
{
|
|
|
|
lo = (1ULL << 53) - lo;
|
|
|
|
if (hi == 0LL)
|
|
|
|
@@ -92,7 +92,7 @@
|
|
|
|
#define NUM_LEADING_ZEROS (BITS_PER_MP_LIMB \
|
|
|
|
- (LDBL_MANT_DIG - ((N - 1) * BITS_PER_MP_LIMB)))
|
|
|
|
|
|
|
|
- if (u.ieee.exponent == 0)
|
|
|
|
+ if (u.d[0].ieee.exponent == 0)
|
|
|
|
{
|
|
|
|
/* A biased exponent of zero is a special case.
|
|
|
|
Either it is a zero or it is a denormal number. */
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/math_ldbl.h glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/math_ldbl.h
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/math_ldbl.h 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/math_ldbl.h 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -14,28 +14,28 @@
|
|
|
|
as bit 53 of the mantissa. */
|
|
|
|
uint64_t hi, lo;
|
|
|
|
int ediff;
|
|
|
|
- union ibm_extended_long_double eldbl;
|
|
|
|
- eldbl.d = x;
|
|
|
|
- *exp = eldbl.ieee.exponent - IBM_EXTENDED_LONG_DOUBLE_BIAS;
|
|
|
|
+ union ibm_extended_long_double u;
|
|
|
|
+ u.ld = x;
|
|
|
|
+ *exp = u.d[0].ieee.exponent - IEEE754_DOUBLE_BIAS;
|
|
|
|
|
|
|
|
- lo = ((int64_t)eldbl.ieee.mantissa2 << 32) | eldbl.ieee.mantissa3;
|
|
|
|
- hi = ((int64_t)eldbl.ieee.mantissa0 << 32) | eldbl.ieee.mantissa1;
|
|
|
|
+ lo = ((uint64_t)u.d[1].ieee.mantissa0 << 32) | u.d[1].ieee.mantissa1;
|
|
|
|
+ hi = ((uint64_t)u.d[0].ieee.mantissa0 << 32) | u.d[0].ieee.mantissa1;
|
|
|
|
/* If the lower double is not a denomal or zero then set the hidden
|
|
|
|
53rd bit. */
|
|
|
|
- if (eldbl.ieee.exponent2 > 0x001)
|
|
|
|
+ if (u.d[1].ieee.exponent > 0x001)
|
|
|
|
{
|
|
|
|
lo |= (1ULL << 52);
|
|
|
|
lo = lo << 7; /* pre-shift lo to match ieee854. */
|
|
|
|
/* The lower double is normalized separately from the upper. We
|
|
|
|
may need to adjust the lower manitissa to reflect this. */
|
|
|
|
- ediff = eldbl.ieee.exponent - eldbl.ieee.exponent2;
|
|
|
|
+ ediff = u.d[0].ieee.exponent - u.d[1].ieee.exponent;
|
|
|
|
if (ediff > 53)
|
|
|
|
lo = lo >> (ediff-53);
|
|
|
|
hi |= (1ULL << 52);
|
|
|
|
}
|
|
|
|
|
|
|
|
- if ((eldbl.ieee.negative != eldbl.ieee.negative2)
|
|
|
|
- && ((eldbl.ieee.exponent2 != 0) && (lo != 0LL)))
|
|
|
|
+ if ((u.d[0].ieee.negative != u.d[1].ieee.negative)
|
|
|
|
+ && ((u.d[1].ieee.exponent != 0) && (lo != 0LL)))
|
|
|
|
{
|
|
|
|
hi--;
|
|
|
|
lo = (1ULL << 60) - lo;
|
|
|
|
@@ -58,10 +58,10 @@
|
|
|
|
unsigned long hidden2, lzcount;
|
|
|
|
unsigned long long hi, lo;
|
|
|
|
|
|
|
|
- u.ieee.negative = sign;
|
|
|
|
- u.ieee.negative2 = sign;
|
|
|
|
- u.ieee.exponent = exp + IBM_EXTENDED_LONG_DOUBLE_BIAS;
|
|
|
|
- u.ieee.exponent2 = exp-53 + IBM_EXTENDED_LONG_DOUBLE_BIAS;
|
|
|
|
+ u.d[0].ieee.negative = sign;
|
|
|
|
+ u.d[1].ieee.negative = sign;
|
|
|
|
+ u.d[0].ieee.exponent = exp + IEEE754_DOUBLE_BIAS;
|
|
|
|
+ u.d[1].ieee.exponent = exp-53 + IEEE754_DOUBLE_BIAS;
|
|
|
|
/* Expect 113 bits (112 bits + hidden) right justified in two longs.
|
|
|
|
The low order 53 bits (52 + hidden) go into the lower double */
|
|
|
|
lo = (lo64 >> 7)& ((1ULL << 53) - 1);
|
|
|
|
@@ -78,7 +78,7 @@
|
|
|
|
if (hidden2)
|
|
|
|
{
|
|
|
|
hi++;
|
|
|
|
- u.ieee.negative2 = !sign;
|
|
|
|
+ u.d[1].ieee.negative = !sign;
|
|
|
|
lo = (1ULL << 53) - lo;
|
|
|
|
}
|
|
|
|
/* The hidden bit of the lo mantissa is zero so we need to
|
|
|
|
@@ -94,32 +94,32 @@
|
|
|
|
lzcount = lzcount - 11;
|
|
|
|
if (lzcount > 0)
|
|
|
|
{
|
|
|
|
- int expnt2 = u.ieee.exponent2 - lzcount;
|
|
|
|
+ int expnt2 = u.d[1].ieee.exponent - lzcount;
|
|
|
|
if (expnt2 >= 1)
|
|
|
|
{
|
|
|
|
/* Not denormal. Normalize and set low exponent. */
|
|
|
|
lo = lo << lzcount;
|
|
|
|
- u.ieee.exponent2 = expnt2;
|
|
|
|
+ u.d[1].ieee.exponent = expnt2;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* Is denormal. */
|
|
|
|
lo = lo << (lzcount + expnt2);
|
|
|
|
- u.ieee.exponent2 = 0;
|
|
|
|
+ u.d[1].ieee.exponent = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
- u.ieee.negative2 = 0;
|
|
|
|
- u.ieee.exponent2 = 0;
|
|
|
|
+ u.d[1].ieee.negative = 0;
|
|
|
|
+ u.d[1].ieee.exponent = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
- u.ieee.mantissa3 = lo & ((1ULL << 32) - 1);
|
|
|
|
- u.ieee.mantissa2 = (lo >> 32) & ((1ULL << 20) - 1);
|
|
|
|
- u.ieee.mantissa1 = hi & ((1ULL << 32) - 1);
|
|
|
|
- u.ieee.mantissa0 = (hi >> 32) & ((1ULL << 20) - 1);
|
|
|
|
- return u.d;
|
|
|
|
+ u.d[1].ieee.mantissa1 = lo & ((1ULL << 32) - 1);
|
|
|
|
+ u.d[1].ieee.mantissa0 = (lo >> 32) & ((1ULL << 20) - 1);
|
|
|
|
+ u.d[0].ieee.mantissa1 = hi & ((1ULL << 32) - 1);
|
|
|
|
+ u.d[0].ieee.mantissa0 = (hi >> 32) & ((1ULL << 20) - 1);
|
|
|
|
+ return u.ld;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Handy utility functions to pack/unpack/cononicalize and find the nearbyint
|
|
|
|
@@ -128,18 +128,18 @@
|
|
|
|
default_ldbl_pack (double a, double aa)
|
|
|
|
{
|
|
|
|
union ibm_extended_long_double u;
|
|
|
|
- u.dd[0] = a;
|
|
|
|
- u.dd[1] = aa;
|
|
|
|
- return u.d;
|
|
|
|
+ u.d[0].d = a;
|
|
|
|
+ u.d[1].d = aa;
|
|
|
|
+ return u.ld;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
default_ldbl_unpack (long double l, double *a, double *aa)
|
|
|
|
{
|
|
|
|
union ibm_extended_long_double u;
|
|
|
|
- u.d = l;
|
|
|
|
- *a = u.dd[0];
|
|
|
|
- *aa = u.dd[1];
|
|
|
|
+ u.ld = l;
|
|
|
|
+ *a = u.d[0].d;
|
|
|
|
+ *aa = u.d[1].d;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifndef ldbl_pack
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -34,11 +34,11 @@
|
|
|
|
unsigned long long hi, lo;
|
|
|
|
int exponent2;
|
|
|
|
|
|
|
|
- u.ieee.negative = sign;
|
|
|
|
- u.ieee.negative2 = sign;
|
|
|
|
- u.ieee.exponent = expt + IBM_EXTENDED_LONG_DOUBLE_BIAS;
|
|
|
|
- u.ieee.exponent2 = 0;
|
|
|
|
- exponent2 = expt - 53 + IBM_EXTENDED_LONG_DOUBLE_BIAS;
|
|
|
|
+ u.d[0].ieee.negative = sign;
|
|
|
|
+ u.d[1].ieee.negative = sign;
|
|
|
|
+ u.d[0].ieee.exponent = expt + IEEE754_DOUBLE_BIAS;
|
|
|
|
+ u.d[1].ieee.exponent = 0;
|
|
|
|
+ exponent2 = expt - 53 + IEEE754_DOUBLE_BIAS;
|
|
|
|
|
|
|
|
#if BITS_PER_MP_LIMB == 32
|
|
|
|
/* The low order 53 bits (52 + hidden) go into the lower double */
|
|
|
|
@@ -74,15 +74,15 @@
|
|
|
|
else
|
|
|
|
lzcount = lzcount + 42;
|
|
|
|
|
|
|
|
- if (lzcount > u.ieee.exponent)
|
|
|
|
+ if (lzcount > u.d[0].ieee.exponent)
|
|
|
|
{
|
|
|
|
- lzcount = u.ieee.exponent;
|
|
|
|
- u.ieee.exponent = 0;
|
|
|
|
+ lzcount = u.d[0].ieee.exponent;
|
|
|
|
+ u.d[0].ieee.exponent = 0;
|
|
|
|
exponent2 -= lzcount;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
- u.ieee.exponent -= (lzcount - 1);
|
|
|
|
+ u.d[0].ieee.exponent -= (lzcount - 1);
|
|
|
|
exponent2 -= (lzcount - 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
@@ -112,9 +112,9 @@
|
|
|
|
{
|
|
|
|
if ((hi & (1LL << 53)) != 0)
|
|
|
|
hi -= 1LL << 52;
|
|
|
|
- u.ieee.exponent++;
|
|
|
|
+ u.d[0].ieee.exponent++;
|
|
|
|
}
|
|
|
|
- u.ieee.negative2 = !sign;
|
|
|
|
+ u.d[1].ieee.negative = !sign;
|
|
|
|
lo = (1LL << 53) - lo;
|
|
|
|
}
|
|
|
|
|
|
|
|
@@ -135,17 +135,17 @@
|
|
|
|
exponent2 = exponent2 - lzcount;
|
|
|
|
}
|
|
|
|
if (exponent2 > 0)
|
|
|
|
- u.ieee.exponent2 = exponent2;
|
|
|
|
+ u.d[1].ieee.exponent = exponent2;
|
|
|
|
else
|
|
|
|
lo >>= 1 - exponent2;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
- u.ieee.negative2 = 0;
|
|
|
|
+ u.d[1].ieee.negative = 0;
|
|
|
|
|
|
|
|
- u.ieee.mantissa3 = lo & 0xffffffffLL;
|
|
|
|
- u.ieee.mantissa2 = (lo >> 32) & 0xfffff;
|
|
|
|
- u.ieee.mantissa1 = hi & 0xffffffffLL;
|
|
|
|
- u.ieee.mantissa0 = (hi >> 32) & ((1LL << (LDBL_MANT_DIG - 86)) - 1);
|
|
|
|
+ u.d[1].ieee.mantissa1 = lo & 0xffffffffLL;
|
|
|
|
+ u.d[1].ieee.mantissa0 = (lo >> 32) & 0xfffff;
|
|
|
|
+ u.d[0].ieee.mantissa1 = hi & 0xffffffffLL;
|
|
|
|
+ u.d[0].ieee.mantissa0 = (hi >> 32) & ((1LL << (LDBL_MANT_DIG - 86)) - 1);
|
|
|
|
|
|
|
|
- return u.d;
|
|
|
|
+ return u.ld;
|
|
|
|
}
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/printf_fphex.c glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/printf_fphex.c
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/printf_fphex.c 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/printf_fphex.c 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -27,31 +27,31 @@
|
|
|
|
unsigned long long int num0, num1; \
|
|
|
|
unsigned long long hi, lo; \
|
|
|
|
int ediff; \
|
|
|
|
- union ibm_extended_long_double eldbl; \
|
|
|
|
- eldbl.d = fpnum.ldbl.d; \
|
|
|
|
+ union ibm_extended_long_double u; \
|
|
|
|
+ u.ld = fpnum.ldbl.d; \
|
|
|
|
\
|
|
|
|
assert (sizeof (long double) == 16); \
|
|
|
|
\
|
|
|
|
- lo = ((long long)eldbl.ieee.mantissa2 << 32) | eldbl.ieee.mantissa3; \
|
|
|
|
- hi = ((long long)eldbl.ieee.mantissa0 << 32) | eldbl.ieee.mantissa1; \
|
|
|
|
+ lo = ((long long)u.d[1].ieee.mantissa0 << 32) | u.d[1].ieee.mantissa1; \
|
|
|
|
+ hi = ((long long)u.d[0].ieee.mantissa0 << 32) | u.d[0].ieee.mantissa1; \
|
|
|
|
lo <<= 7; /* pre-shift lo to match ieee854. */ \
|
|
|
|
/* If the lower double is not a denomal or zero then set the hidden \
|
|
|
|
53rd bit. */ \
|
|
|
|
- if (eldbl.ieee.exponent2 != 0) \
|
|
|
|
+ if (u.d[1].ieee.exponent != 0) \
|
|
|
|
lo |= (1ULL << (52 + 7)); \
|
|
|
|
else \
|
|
|
|
lo <<= 1; \
|
|
|
|
/* The lower double is normalized separately from the upper. We \
|
|
|
|
may need to adjust the lower manitissa to reflect this. */ \
|
|
|
|
- ediff = eldbl.ieee.exponent - eldbl.ieee.exponent2; \
|
|
|
|
+ ediff = u.d[0].ieee.exponent - u.d[1].ieee.exponent; \
|
|
|
|
if (ediff > 53 + 63) \
|
|
|
|
lo = 0; \
|
|
|
|
else if (ediff > 53) \
|
|
|
|
lo = lo >> (ediff - 53); \
|
|
|
|
- else if (eldbl.ieee.exponent2 == 0 && ediff < 53) \
|
|
|
|
+ else if (u.d[1].ieee.exponent == 0 && ediff < 53) \
|
|
|
|
lo = lo << (53 - ediff); \
|
|
|
|
- if (eldbl.ieee.negative != eldbl.ieee.negative2 \
|
|
|
|
- && (eldbl.ieee.exponent2 != 0 || lo != 0L)) \
|
|
|
|
+ if (u.d[0].ieee.negative != u.d[1].ieee.negative \
|
|
|
|
+ && (u.d[1].ieee.exponent != 0 || lo != 0L)) \
|
|
|
|
{ \
|
|
|
|
lo = (1ULL << 60) - lo; \
|
|
|
|
if (hi == 0L) \
|
|
|
|
@@ -59,7 +59,7 @@
|
|
|
|
/* we have a borrow from the hidden bit, so shift left 1. */ \
|
|
|
|
hi = 0xffffffffffffeLL | (lo >> 59); \
|
|
|
|
lo = 0xfffffffffffffffLL & (lo << 1); \
|
|
|
|
- eldbl.ieee.exponent--; \
|
|
|
|
+ u.d[0].ieee.exponent--; \
|
|
|
|
} \
|
|
|
|
else \
|
|
|
|
hi--; \
|
|
|
|
@@ -110,9 +110,9 @@
|
|
|
|
*--wnumstr = L'0'; \
|
|
|
|
} \
|
|
|
|
\
|
|
|
|
- leading = eldbl.ieee.exponent == 0 ? '0' : '1'; \
|
|
|
|
+ leading = u.d[0].ieee.exponent == 0 ? '0' : '1'; \
|
|
|
|
\
|
|
|
|
- exponent = eldbl.ieee.exponent; \
|
|
|
|
+ exponent = u.d[0].ieee.exponent; \
|
|
|
|
\
|
|
|
|
if (exponent == 0) \
|
|
|
|
{ \
|
|
|
|
@@ -122,18 +122,18 @@
|
|
|
|
{ \
|
|
|
|
/* This is a denormalized number. */ \
|
|
|
|
expnegative = 1; \
|
|
|
|
- exponent = IBM_EXTENDED_LONG_DOUBLE_BIAS - 1; \
|
|
|
|
+ exponent = IEEE754_DOUBLE_BIAS - 1; \
|
|
|
|
} \
|
|
|
|
} \
|
|
|
|
- else if (exponent >= IBM_EXTENDED_LONG_DOUBLE_BIAS) \
|
|
|
|
+ else if (exponent >= IEEE754_DOUBLE_BIAS) \
|
|
|
|
{ \
|
|
|
|
expnegative = 0; \
|
|
|
|
- exponent -= IBM_EXTENDED_LONG_DOUBLE_BIAS; \
|
|
|
|
+ exponent -= IEEE754_DOUBLE_BIAS; \
|
|
|
|
} \
|
|
|
|
else \
|
|
|
|
{ \
|
|
|
|
expnegative = 1; \
|
|
|
|
- exponent = -(exponent - IBM_EXTENDED_LONG_DOUBLE_BIAS); \
|
|
|
|
+ exponent = -(exponent - IEEE754_DOUBLE_BIAS); \
|
|
|
|
} \
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -33,11 +33,11 @@
|
|
|
|
fenv_t env;
|
|
|
|
static const long double TWO52 = 4503599627370496.0L;
|
|
|
|
union ibm_extended_long_double u;
|
|
|
|
- u.d = x;
|
|
|
|
+ u.ld = x;
|
|
|
|
|
|
|
|
- if (fabs (u.dd[0]) < TWO52)
|
|
|
|
+ if (fabs (u.d[0].d) < TWO52)
|
|
|
|
{
|
|
|
|
- double high = u.dd[0];
|
|
|
|
+ double high = u.d[0].d;
|
|
|
|
feholdexcept (&env);
|
|
|
|
if (high > 0.0)
|
|
|
|
{
|
|
|
|
@@ -51,11 +51,11 @@
|
|
|
|
high += TWO52;
|
|
|
|
if (high == 0.0) high = -0.0;
|
|
|
|
}
|
|
|
|
- u.dd[0] = high;
|
|
|
|
- u.dd[1] = 0.0;
|
|
|
|
+ u.d[0].d = high;
|
|
|
|
+ u.d[1].d = 0.0;
|
|
|
|
fesetenv (&env);
|
|
|
|
}
|
|
|
|
- else if (fabs (u.dd[1]) < TWO52 && u.dd[1] != 0.0)
|
|
|
|
+ else if (fabs (u.d[1].d) < TWO52 && u.d[1].d != 0.0)
|
|
|
|
{
|
|
|
|
double high, low, tau;
|
|
|
|
/* In this case we have to round the low double and handle any
|
|
|
|
@@ -64,55 +64,55 @@
|
|
|
|
may already be rounded and the low double may have the
|
|
|
|
opposite sign to compensate. */
|
|
|
|
feholdexcept (&env);
|
|
|
|
- if (u.dd[0] > 0.0)
|
|
|
|
+ if (u.d[0].d > 0.0)
|
|
|
|
{
|
|
|
|
- if (u.dd[1] > 0.0)
|
|
|
|
+ if (u.d[1].d > 0.0)
|
|
|
|
{
|
|
|
|
/* If the high/low doubles are the same sign then simply
|
|
|
|
round the low double. */
|
|
|
|
- high = u.dd[0];
|
|
|
|
- low = u.dd[1];
|
|
|
|
+ high = u.d[0].d;
|
|
|
|
+ low = u.d[1].d;
|
|
|
|
}
|
|
|
|
- else if (u.dd[1] < 0.0)
|
|
|
|
+ else if (u.d[1].d < 0.0)
|
|
|
|
{
|
|
|
|
/* Else the high double is pre rounded and we need to
|
|
|
|
adjust for that. */
|
|
|
|
|
|
|
|
- tau = __nextafter (u.dd[0], 0.0);
|
|
|
|
- tau = (u.dd[0] - tau) * 2.0;
|
|
|
|
- high = u.dd[0] - tau;
|
|
|
|
- low = u.dd[1] + tau;
|
|
|
|
+ tau = __nextafter (u.d[0].d, 0.0);
|
|
|
|
+ tau = (u.d[0].d - tau) * 2.0;
|
|
|
|
+ high = u.d[0].d - tau;
|
|
|
|
+ low = u.d[1].d + tau;
|
|
|
|
}
|
|
|
|
low += TWO52;
|
|
|
|
low -= TWO52;
|
|
|
|
}
|
|
|
|
- else if (u.dd[0] < 0.0)
|
|
|
|
+ else if (u.d[0].d < 0.0)
|
|
|
|
{
|
|
|
|
- if (u.dd[1] < 0.0)
|
|
|
|
+ if (u.d[1].d < 0.0)
|
|
|
|
{
|
|
|
|
/* If the high/low doubles are the same sign then simply
|
|
|
|
round the low double. */
|
|
|
|
- high = u.dd[0];
|
|
|
|
- low = u.dd[1];
|
|
|
|
+ high = u.d[0].d;
|
|
|
|
+ low = u.d[1].d;
|
|
|
|
}
|
|
|
|
- else if (u.dd[1] > 0.0)
|
|
|
|
+ else if (u.d[1].d > 0.0)
|
|
|
|
{
|
|
|
|
/* Else the high double is pre rounded and we need to
|
|
|
|
adjust for that. */
|
|
|
|
- tau = __nextafter (u.dd[0], 0.0);
|
|
|
|
- tau = (u.dd[0] - tau) * 2.0;
|
|
|
|
- high = u.dd[0] - tau;
|
|
|
|
- low = u.dd[1] + tau;
|
|
|
|
+ tau = __nextafter (u.d[0].d, 0.0);
|
|
|
|
+ tau = (u.d[0].d - tau) * 2.0;
|
|
|
|
+ high = u.d[0].d - tau;
|
|
|
|
+ low = u.d[1].d + tau;
|
|
|
|
}
|
|
|
|
low = TWO52 - low;
|
|
|
|
low = -(low - TWO52);
|
|
|
|
}
|
|
|
|
- u.dd[0] = high + low;
|
|
|
|
- u.dd[1] = high - u.dd[0] + low;
|
|
|
|
+ u.d[0].d = high + low;
|
|
|
|
+ u.d[1].d = high - u.d[0].d + low;
|
|
|
|
fesetenv (&env);
|
|
|
|
}
|
|
|
|
|
|
|
|
- return u.d;
|
|
|
|
+ return u.ld;
|
|
|
|
}
|
|
|
|
|
|
|
|
long_double_symbol (libm, __nearbyintl, nearbyintl);
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/strtold_l.c glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/strtold_l.c
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/strtold_l.c 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/strtold_l.c 2014-05-26 21:12:01.000000000 -0500
|
|
|
|
@@ -43,12 +43,11 @@
|
|
|
|
#define FLOAT_HUGE_VAL HUGE_VALL
|
|
|
|
# define SET_MANTISSA(flt, mant) \
|
|
|
|
do { union ibm_extended_long_double u; \
|
|
|
|
- u.d = (flt); \
|
|
|
|
- if ((mant & 0xfffffffffffffULL) == 0) \
|
|
|
|
- mant = 0x8000000000000ULL; \
|
|
|
|
- u.ieee.mantissa0 = ((mant) >> 32) & 0xfffff; \
|
|
|
|
- u.ieee.mantissa1 = (mant) & 0xffffffff; \
|
|
|
|
- (flt) = u.d; \
|
|
|
|
+ u.ld = (flt); \
|
|
|
|
+ u.d[0].ieee_nan.mantissa0 = (mant) >> 32; \
|
|
|
|
+ u.d[0].ieee_nan.mantissa1 = (mant); \
|
|
|
|
+ if ((u.d[0].ieee.mantissa0 | u.d[0].ieee.mantissa1) != 0) \
|
|
|
|
+ (flt) = u.ld; \
|
|
|
|
} while (0)
|
|
|
|
|
|
|
|
#include <strtod_l.c>
|
|
|
|
diff -urN glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c
|
|
|
|
--- glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c 2014-05-26 21:08:01.000000000 -0500
|
|
|
|
+++ glibc-2.17-c758a686/sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c 2014-05-26 21:08:10.000000000 -0500
|
|
|
|
@@ -89,23 +89,23 @@
|
|
|
|
double vals[12];
|
|
|
|
SET_RESTORE_ROUND (FE_TONEAREST);
|
|
|
|
union ibm_extended_long_double xu, yu;
|
|
|
|
- xu.d = x;
|
|
|
|
- yu.d = y;
|
|
|
|
- if (fabs (xu.dd[1]) < 0x1p-500)
|
|
|
|
- xu.dd[1] = 0.0;
|
|
|
|
- if (fabs (yu.dd[1]) < 0x1p-500)
|
|
|
|
- yu.dd[1] = 0.0;
|
|
|
|
- mul_split (&vals[1], &vals[0], xu.dd[0], xu.dd[0]);
|
|
|
|
- mul_split (&vals[3], &vals[2], xu.dd[0], xu.dd[1]);
|
|
|
|
+ xu.ld = x;
|
|
|
|
+ yu.ld = y;
|
|
|
|
+ if (fabs (xu.d[1].d) < 0x1p-500)
|
|
|
|
+ xu.d[1].d = 0.0;
|
|
|
|
+ if (fabs (yu.d[1].d) < 0x1p-500)
|
|
|
|
+ yu.d[1].d = 0.0;
|
|
|
|
+ mul_split (&vals[1], &vals[0], xu.d[0].d, xu.d[0].d);
|
|
|
|
+ mul_split (&vals[3], &vals[2], xu.d[0].d, xu.d[1].d);
|
|
|
|
vals[2] *= 2.0;
|
|
|
|
vals[3] *= 2.0;
|
|
|
|
- mul_split (&vals[5], &vals[4], xu.dd[1], xu.dd[1]);
|
|
|
|
- mul_split (&vals[7], &vals[6], yu.dd[0], yu.dd[0]);
|
|
|
|
- mul_split (&vals[9], &vals[8], yu.dd[0], yu.dd[1]);
|
|
|
|
+ mul_split (&vals[5], &vals[4], xu.d[1].d, xu.d[1].d);
|
|
|
|
+ mul_split (&vals[7], &vals[6], yu.d[0].d, yu.d[0].d);
|
|
|
|
+ mul_split (&vals[9], &vals[8], yu.d[0].d, yu.d[1].d);
|
|
|
|
vals[8] *= 2.0;
|
|
|
|
vals[9] *= 2.0;
|
|
|
|
- mul_split (&vals[11], &vals[10], yu.dd[1], yu.dd[1]);
|
|
|
|
- if (xu.dd[0] >= 0.75)
|
|
|
|
+ mul_split (&vals[11], &vals[10], yu.d[1].d, yu.d[1].d);
|
|
|
|
+ if (xu.d[0].d >= 0.75)
|
|
|
|
vals[1] -= 1.0;
|
|
|
|
else
|
|
|
|
{
|