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-rw-r--r--ChangeLog18
-rw-r--r--NEWS3
-rw-r--r--sysdeps/ieee754/ldbl-128/s_log1pl.c244
-rw-r--r--sysdeps/s390/s390-32/backtrace.c2
-rw-r--r--sysdeps/s390/s390-64/backtrace.c3
-rw-r--r--sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h7
-rw-r--r--sysdeps/unix/sysv/linux/ia64/sys/ucontext.h2
7 files changed, 273 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog
index c144307..0eb8a38 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,21 @@
+2001-05-22 Andreas Jaeger <aj@suse.de>
+
+ * sysdeps/ieee754/ldbl-128/s_log1pl.c: New file, contributed by
+ Stephen L Moshier <moshier@mediaone.net>.
+
+2001-05-22 Martin Schwidefsky <schwidefsky@de.ibm.com>
+
+ * sysdeps/s390/s390-32/backtrace.c: Make backtrace return the
+ return addresses instead of the stack pointers.
+ * sysdeps/s390/s390-64/backtrace.c: Likewise.
+
+2001-05-21 Jakub Jelinek <jakub@redhat.com>
+
+ * sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Include
+ bits/sigcontext.h instead of bits/sigstack.h.
+ * sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h: Add
+ multiple-inclusion guards.
+
2001-05-21 Andreas Jaeger <aj@suse.de>
* locale/programs/ld-collate.c (handle_ellipsis): Fix message.
diff --git a/NEWS b/NEWS
index c192155..c6fd017 100644
--- a/NEWS
+++ b/NEWS
@@ -8,7 +8,8 @@ Please send GNU C library bug reports using the `glibcbug' script to
Version 2.2.4
-* Stephen Moshier implemented expm1 for the 128-bit long double format.
+* Stephen Moshier implemented expm1, log1p for the 128-bit long double
+ format.
Version 2.2.3
diff --git a/sysdeps/ieee754/ldbl-128/s_log1pl.c b/sysdeps/ieee754/ldbl-128/s_log1pl.c
new file mode 100644
index 0000000..fcb6ecc
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128/s_log1pl.c
@@ -0,0 +1,244 @@
+/* log1pl.c
+ *
+ * Relative error logarithm
+ * Natural logarithm of 1+x, 128-bit long double precision
+ *
+ *
+ *
+ * SYNOPSIS:
+ *
+ * long double x, y, log1pl();
+ *
+ * y = log1pl( x );
+ *
+ *
+ *
+ * DESCRIPTION:
+ *
+ * Returns the base e (2.718...) logarithm of 1+x.
+ *
+ * The argument 1+x is separated into its exponent and fractional
+ * parts. If the exponent is between -1 and +1, the logarithm
+ * of the fraction is approximated by
+ *
+ * log(1+x) = x - 0.5 x^2 + x^3 P(x)/Q(x).
+ *
+ * Otherwise, setting z = 2(w-1)/(w+1),
+ *
+ * log(w) = z + z^3 P(z)/Q(z).
+ *
+ *
+ *
+ * ACCURACY:
+ *
+ * Relative error:
+ * arithmetic domain # trials peak rms
+ * IEEE -1, 8 100000 1.9e-34 4.3e-35
+ */
+
+/* Copyright 2001 by Stephen L. Moshier */
+
+#include "math.h"
+#include "math_private.h"
+
+/* Coefficients for log(1+x) = x - x^2 / 2 + x^3 P(x)/Q(x)
+ * 1/sqrt(2) <= 1+x < sqrt(2)
+ * Theoretical peak relative error = 5.3e-37,
+ * relative peak error spread = 2.3e-14
+ */
+static long double
+ P12 = 1.538612243596254322971797716843006400388E-6L,
+ P11 = 4.998469661968096229986658302195402690910E-1L,
+ P10 = 2.321125933898420063925789532045674660756E1L,
+ P9 = 4.114517881637811823002128927449878962058E2L,
+ P8 = 3.824952356185897735160588078446136783779E3L,
+ P7 = 2.128857716871515081352991964243375186031E4L,
+ P6 = 7.594356839258970405033155585486712125861E4L,
+ P5 = 1.797628303815655343403735250238293741397E5L,
+ P4 = 2.854829159639697837788887080758954924001E5L,
+ P3 = 3.007007295140399532324943111654767187848E5L,
+ P2 = 2.014652742082537582487669938141683759923E5L,
+ P1 = 7.771154681358524243729929227226708890930E4L,
+ P0 = 1.313572404063446165910279910527789794488E4L,
+ /* Q12 = 1.000000000000000000000000000000000000000E0L, */
+ Q11 = 4.839208193348159620282142911143429644326E1L,
+ Q10 = 9.104928120962988414618126155557301584078E2L,
+ Q9 = 9.147150349299596453976674231612674085381E3L,
+ Q8 = 5.605842085972455027590989944010492125825E4L,
+ Q7 = 2.248234257620569139969141618556349415120E5L,
+ Q6 = 6.132189329546557743179177159925690841200E5L,
+ Q5 = 1.158019977462989115839826904108208787040E6L,
+ Q4 = 1.514882452993549494932585972882995548426E6L,
+ Q3 = 1.347518538384329112529391120390701166528E6L,
+ Q2 = 7.777690340007566932935753241556479363645E5L,
+ Q1 = 2.626900195321832660448791748036714883242E5L,
+ Q0 = 3.940717212190338497730839731583397586124E4L;
+
+/* Coefficients for log(x) = z + z^3 P(z^2)/Q(z^2),
+ * where z = 2(x-1)/(x+1)
+ * 1/sqrt(2) <= x < sqrt(2)
+ * Theoretical peak relative error = 1.1e-35,
+ * relative peak error spread 1.1e-9
+ */
+static long double
+ R5 = -8.828896441624934385266096344596648080902E-1L,
+ R4 = 8.057002716646055371965756206836056074715E1L,
+ R3 = -2.024301798136027039250415126250455056397E3L,
+ R2 = 2.048819892795278657810231591630928516206E4L,
+ R1 = -8.977257995689735303686582344659576526998E4L,
+ R0 = 1.418134209872192732479751274970992665513E5L,
+ /* S6 = 1.000000000000000000000000000000000000000E0L, */
+ S5 = -1.186359407982897997337150403816839480438E2L,
+ S4 = 3.998526750980007367835804959888064681098E3L,
+ S3 = -5.748542087379434595104154610899551484314E4L,
+ S2 = 4.001557694070773974936904547424676279307E5L,
+ S1 = -1.332535117259762928288745111081235577029E6L,
+ S0 = 1.701761051846631278975701529965589676574E6L;
+
+/* C1 + C2 = ln 2 */
+static long double C1 = 6.93145751953125E-1L;
+static long double C2 = 1.428606820309417232121458176568075500134E-6L;
+
+static long double sqrth = 0.7071067811865475244008443621048490392848L;
+/* ln (2^16384 * (1 - 2^-113)) */
+static long double maxlog = 1.1356523406294143949491931077970764891253E4L;
+static long double big = 2e4932L;
+static long double zero = 0.0L;
+
+#if 1
+/* Make sure these are prototyped. */
+long double frexpl (long double, int *);
+long double ldexpl (long double, int);
+#endif
+
+
+long double
+__log1pl (long double xm1)
+{
+ long double x, y, z, r, s;
+ ieee854_long_double_shape_type u;
+ int32_t ix;
+ int e;
+
+ x = xm1 + 1.0L;
+
+ /* Test for domain errors. */
+ if (x > maxlog)
+ return (big * big);
+
+ /* Test for NaN input. */
+ u.value = xm1;
+ ix = u.parts32.w0 & 0x7fffffff;
+ if ((ix >= 0x7fff0000)
+ && (((ix & 0xffff) | u.parts32.w1 | u.parts32.w2 | u.parts32.w3) != 0))
+ return x;
+
+ if (x <= 0.0L)
+ {
+ if (x == 0.0L)
+ return (-big * big);
+ else
+ return (zero / zero);
+ }
+
+ /* Separate mantissa from exponent. */
+
+ /* Use frexp used so that denormal numbers will be handled properly. */
+ x = frexpl (x, &e);
+
+ /* Logarithm using log(x) = z + z^3 P(z^2)/Q(z^2),
+ where z = 2(x-1)/x+1). */
+ if ((e > 2) || (e < -2))
+ {
+ if (x < sqrth)
+ { /* 2( 2x-1 )/( 2x+1 ) */
+ e -= 1;
+ z = x - 0.5L;
+ y = 0.5L * z + 0.5L;
+ }
+ else
+ { /* 2 (x-1)/(x+1) */
+ z = x - 0.5L;
+ z -= 0.5L;
+ y = 0.5L * x + 0.5L;
+ }
+ x = z / y;
+ z = x * x;
+ r = ((((R5 * z
+ + R4) * z
+ + R3) * z
+ + R2) * z
+ + R1) * z
+ + R0;
+ s = (((((z
+ + S5) * z
+ + S4) * z
+ + S3) * z
+ + S2) * z
+ + S1) * z
+ + S0;
+ z = x * (z * r / s);
+ z = z + e * C2;
+ z = z + x;
+ z = z + e * C1;
+ return (z);
+ }
+
+
+ /* Logarithm using log(1+x) = x - .5x^2 + x^3 P(x)/Q(x). */
+
+ if (x < sqrth)
+ {
+ e -= 1;
+ if (e != 0)
+ x = 2.0L * x - 1.0L; /* 2x - 1 */
+ else
+ x = xm1;
+ }
+ else
+ {
+ if (e != 0)
+ x = x - 1.0L;
+ else
+ x = xm1;
+ }
+ z = x * x;
+ r = (((((((((((P12 * x
+ + P11) * x
+ + P10) * x
+ + P9) * x
+ + P8) * x
+ + P7) * x
+ + P6) * x
+ + P5) * x
+ + P4) * x
+ + P3) * x
+ + P2) * x
+ + P1) * x
+ + P0;
+ s = (((((((((((x
+ + Q11) * x
+ + Q10) * x
+ + Q9) * x
+ + Q8) * x
+ + Q7) * x
+ + Q6) * x
+ + Q5) * x
+ + Q4) * x
+ + Q3) * x
+ + Q2) * x
+ + Q1) * x
+ + Q0;
+ y = x * (z * r / s);
+ y = y + e * C2;
+ z = y - 0.5L * z;
+ z = z + x;
+ z = z + e * C1;
+ return (z);
+}
+
+weak_alias (__log1pl, log1pl)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__log1p, __log1pl)
+weak_alias (__log1p, log1pl)
+#endif
diff --git a/sysdeps/s390/s390-32/backtrace.c b/sysdeps/s390/s390-32/backtrace.c
index 8e3ca7e..5e27dd4 100644
--- a/sysdeps/s390/s390-32/backtrace.c
+++ b/sysdeps/s390/s390-32/backtrace.c
@@ -71,7 +71,7 @@ __backtrace (array, size)
out of range. */
break;
- array[cnt++] = stack->save_grps[9];
+ array[cnt++] = stack->save_grps[8];
stack = (struct layout *) stack->back_chain;
}
diff --git a/sysdeps/s390/s390-64/backtrace.c b/sysdeps/s390/s390-64/backtrace.c
index 15ab214..0a6d3b9 100644
--- a/sysdeps/s390/s390-64/backtrace.c
+++ b/sysdeps/s390/s390-64/backtrace.c
@@ -70,7 +70,7 @@ __backtrace (array, size)
out of range. */
break;
- array[cnt++] = stack->save_grps[9];
+ array[cnt++] = stack->save_grps[8];
stack = (struct layout *) stack->back_chain;
}
@@ -78,4 +78,3 @@ __backtrace (array, size)
return cnt;
}
weak_alias (__backtrace, backtrace)
-
diff --git a/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h b/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h
index 8daaa5e..7f99d85 100644
--- a/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h
+++ b/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997, 1998,2000 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jes Sorensen <jes@linuxcare.com>, July 2000
@@ -21,6 +21,9 @@
# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
#endif
+#ifndef _BITS_SIGCONTEXT_H
+#define _BITS_SIGCONTEXT_H 1
+
#include <asm/fpu.h>
#include <bits/sigstack.h>
@@ -50,3 +53,5 @@ struct sigcontext
* include the kernel headers here. */
unsigned long int sc_mask; /* signal mask to restore after handler returns */
};
+
+#endif _BITS_SIGCONTEXT_H
diff --git a/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h b/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
index 8ca5220..017d6e7 100644
--- a/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
@@ -22,7 +22,7 @@
#include <features.h>
#include <signal.h>
-#include <bits/sigstack.h>
+#include <bits/sigcontext.h>
/*
* These are here mostly for backwards compatibility with older Unices.
generated by cgit v1.1 at 2024-11-28 02:25:59 +0000