Update.cvs/libc-ud-970326cvs/libc-970329cvs/libc-970328cvs/libc-970327

1997-03-27 02:28  Ulrich Drepper  <drepper@cygnus.com>

	* gmon/gmon.c (monstartup): Mark all messages.
	(write_call_graph): Rewrite to use larger I/O vector for writev
	call to reduce syscall overhead.
	(write_bb_counts): Simplify writev handling.

	* inet/rexec.c: Make string parameters `const'.
	* resolv/netdb.h: Add prototypes for rcmd, rexec, ruserok, and
	rresvport.

	* math/Makefile: Don't define CFLAGS-* macros to prevent inlining
	in libm-test.
	* math/libm-test.c (this_does_nothing): Remove functions.  It's
	notuseful on any platform but ix86.
	(inverse_func_pair_test): Don't use this_does_nothing.  Use
	memory reference.
	(identities1_test): Likewise.
	(identities2_test): Likewise.
	(identities3_test): Likewise.
	(basic_test): Likewise.
	Patch by Andreas Schwab.
	(BUILD_COMPLEX): New macro.  Create complex number from real and
	imaginary parts.  This works around bugs/inefficiencies in current
	gcc.
	(cexp_test): Use BUILD_COMPLEX.  Add more tests.

	* nss/nsswitch.c: Fix typo.

	* posix/glob.h: Add declaration for glob_pattern_p.
	* posix/glob.c: Rename glob_pattern_p to __glob_pattern_p and
	make glob_pattern_p a weak alias.  This function is used in other
	packages (e.g. bash).

	* signal/Makefile (routines): Add sigisempty, sigandset, and
	sigorset.
	* signal/signal.h: Add prototypes for sigisempty, sigandset, and
	sigorset.
	* signal/sigisempty.c: New file.
	* signal/sigandset.c: New file.
	* signal/sigorset.c: New file.
	* sysdeps/generic/sigset.h: Define __sigisemptyset, __sigandset,
	and __sigorset.
	* sysdeps/unix/sysv/linux/sigset.h: Likewise.

	* stdlib/strtod.c: Handle `n-char-sequence' in NaN parsing.  It
	determines the bits in the mantissa part of the NaN.
	* stdlib/strtof.c: Define SET_MANTISSA for float type.
	* wcsmbs/wcstof.c: Define SET_MANTISSA for float type.
	* stdlib/strtold.c: Define SET_MANTISSA for long double type.
	* wcsmbs/wcstold.c: Define SET_MANTISSA for long double type.

	* sysdeps/libm-ieee754/s_cexp.c: Use explicit assignment to
	complex number components.  Some more corrects for special cases.
	* sysdeps/libm-ieee754/s_cexpf.c: Likewise.
	* sysdeps/libm-ieee754/s_cexpl.c: Likewise.

	* sysdeps/sparc/elf/start.S: Remove as per request of Miguel de Icaza.

	* sysdeps/unix/sysv/linux/netinet/icmp.h: Remove since we have
	ip_icmp.h.  Reported by HJ Lu.

1997-03-25 03:50  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/Makefile (CFLAGS-rtld.c): Add -Wno-unused.

	* sysdeps/m68k/dl-machine.h (elf_machine_rela): Rewritten as for
	i386.
	(elf_machine_lookup_noexec_p, elf_machine_lookup_noplt_p,
	ELF_MACHINE_RELOC_NOPLT): Define.

1997-03-25 03:48  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* grp/grp.h: Include <stddef.h> only once.

1997-03-25 09:38  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/termbits.h (OXTABS): Don't define.
	* sysdeps/unix/sysv/linux/alpha/termbits.h (OXTABS): Likewise.

	* termios/sys/ttydefaults.h (TTYDEF_OFLAG): Use either OXTABS or
	TAB3, if one of them is defined.

1997-03-26 04:53  Ulrich Drepper  <drepper@cygnus.com>

	* posix/glob.c (next_brace_sub): Decrement depth counter when '}'
	is found.
	Patch by Dennis Henriksen <opus@flamingo.osrl.dk>.

1997-03-25  16:25  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* sunrpc/Makefile: Comment gccwarn out.
	* sunrpc/auth_none.c: Fix prototypes and parameters for compiling
	with enabled warnings.
	* sunrpc/auth_unix.c: Likewise.
	* sunrpc/authuxprot.c: Likewise.
	* sunrpc/bindrsvprt.c: Likewise.
	* sunrpc/clnt_gen.c: Likewise.
	* sunrpc/clnt_perr.c: Likewise.
	* sunrpc/clnt_raw.c: Likewise.
	* sunrpc/clnt_simp.c: Likewise.
	* sunrpc/clnt_tcp.c: Likewise.
	* sunrpc/clnt_udp.c: Likewise.
	* sunrpc/get_myaddr.c: Likewise.
	* sunrpc/getrpcport.c: Likewise.
	* sunrpc/pm_getmaps.c: Likewise.
	* sunrpc/pm_getport.c: Likewise.
	* sunrpc/pmap_clnt.c: Likewise.
	* sunrpc/pmap_prot.c: Likewise.
	* sunrpc/pmap_prot2.c: Likewise.
	* sunrpc/pmap_rmt.c: Likewise.
	* sunrpc/rpc/auth.h: Likewise.
	* sunrpc/rpc/clnt.h: Likewise.
	* sunrpc/rpc/pmap_clnt.h: Likewise.
	* sunrpc/rpc/svc.h: Likewise.
	* sunrpc/rpc/svc_auth.h: Likewise.
	* sunrpc/rpc/types.h: Likewise.
	* sunrpc/rpc/xdr.h: Likewise.
	* sunrpc/rpc_clntout.c: Likewise.
	* sunrpc/rpc_cmsg.c: Likewise.
	* sunrpc/rpc_dtable.c: Likewise.
	* sunrpc/rpc_prot.c: Likewise.
	* sunrpc/svc.c: Likewise.
	* sunrpc/svc_auth.c: Likewise.
	* sunrpc/svc_authux.c: Likewise.
	* sunrpc/svc_raw.c: Likewise.
	* sunrpc/svc_run.c: Likewise.
	* sunrpc/svc_simple.c: Likewise.
	* sunrpc/svc_tcp.c: Likewise.
	* sunrpc/svc_udp.c: Likewise.
	* sunrpc/xdr.c: Likewise.
	* sunrpc/xdr_array.c: Likewise.
	* sunrpc/xdr_mem.c: Likewise.
	* sunrpc/xdr_rec.c: Likewise.
	* sunrpc/xdr_ref.c: Likewise.
	* sunrpc/xdr_stdio.c: Likewise.

1997-03-25 13:39  Ulrich Drepper  <drepper@cygnus.com>

	* math/libm-test.c (log2_test): Compile this function and call it.
	(exp2_test): Likewise, but check whether function really exists
	before testing.

	* math/Makefile (libm-calls): Add s_log2 and s_exp2.

1997-03-25 04:50  Ulrich Drepper  <drepper@cygnus.com>

	Implement exp2 function.
	* sysdeps/libm-i387/s_exp2.S: New file.
	* sysdeps/libm-i387/s_exp2f.S: New file.
	* sysdeps/libm-i387/s_exp2l.S: New file.

	Implement log2 function.
	* sysdeps/libm-i387/s_log2.S: New file.
	* sysdeps/libm-i387/s_log2f.S: New file.
	* sysdeps/libm-i387/s_log2l.S: New file.
	* sysdeps/libm-ieee754/s_log2.c: New file.
	* sysdeps/libm-ieee754/s_log2f.c: New file.
	* sysdeps/stub/s_log2.c: New file.  Stub version.

6 files changed, 291 insertions, 0 deletions

diff --git a/sysdeps/libm-i387/s_exp2.S b/sysdeps/libm-i387/s_exp2.S
new file mode 100644
index 0000000000..1afacf58cd
--- /dev/null
+++ b/sysdeps/libm-i387/s_exp2.S
@@ -0,0 +1,38 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Adapted for exp2 by Ulrich Drepper <drepper@cygnus.com>.
+ * Public domain.
+ */
+
+#include <machine/asm.h>
+
+ENTRY(__exp2)
+	fldl	4(%esp)
+/* I added the following ugly construct because exp(+-Inf) resulted
+   in NaN.  The ugliness results from the bright minds at Intel.
+   For the i686 the code can be written better.
+   -- drepper@cygnus.com.  */
+	fxam				/* Is NaN or +-Inf?  */
+	fstsw	%ax
+	movb	$0x45, %dh
+	andb	%ah, %dh
+	cmpb	$0x05, %dh
+	je	1f			/* Is +-Inf, jump.  */
+	fld	%st
+	frndint				/* int(x) */
+	fsubr	%st,%st(1)		/* fract(x) */
+	fxch
+	f2xm1				/* 2^(fract(x)) - 1 */
+	fld1
+	faddp				/* 2^(fract(x)) */
+	fscale				/* e^x */
+	fstp	%st(1)
+	ret
+
+1:	testl	$0x200, %eax		/* Test sign.  */
+	jz	2f			/* If positive, jump.  */
+	fstp	%st
+	fldz				/* Set result to 0.  */
+2:	ret
+END (__exp2)
+weak_alias (__exp2, exp2)
diff --git a/sysdeps/libm-i387/s_exp2f.S b/sysdeps/libm-i387/s_exp2f.S
new file mode 100644
index 0000000000..896583bf83
--- /dev/null
+++ b/sysdeps/libm-i387/s_exp2f.S
@@ -0,0 +1,38 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Adapted for exp2 by Ulrich Drepper <drepper@cygnus.com>.
+ * Public domain.
+ */
+
+#include <machine/asm.h>
+
+ENTRY(__exp2f)
+	flds	4(%esp)
+/* I added the following ugly construct because exp(+-Inf) resulted
+   in NaN.  The ugliness results from the bright minds at Intel.
+   For the i686 the code can be written better.
+   -- drepper@cygnus.com.  */
+	fxam				/* Is NaN or +-Inf?  */
+	fstsw	%ax
+	movb	$0x45, %dh
+	andb	%ah, %dh
+	cmpb	$0x05, %dh
+	je	1f			/* Is +-Inf, jump.  */
+	fld	%st
+	frndint				/* int(x) */
+	fsubr	%st,%st(1)		/* fract(x) */
+	fxch
+	f2xm1				/* 2^(fract(x)) - 1 */
+	fld1
+	faddp				/* 2^(fract(x)) */
+	fscale				/* e^x */
+	fstp	%st(1)
+	ret
+
+1:	testl	$0x200, %eax		/* Test sign.  */
+	jz	2f			/* If positive, jump.  */
+	fstp	%st
+	fldz				/* Set result to 0.  */
+2:	ret
+END (__exp2f)
+weak_alias (__exp2f, exp2f)
diff --git a/sysdeps/libm-i387/s_exp2l.S b/sysdeps/libm-i387/s_exp2l.S
new file mode 100644
index 0000000000..4b543d06f8
--- /dev/null
+++ b/sysdeps/libm-i387/s_exp2l.S
@@ -0,0 +1,38 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Adapted for exp2 by Ulrich Drepper <drepper@cygnus.com>.
+ * Public domain.
+ */
+
+#include <machine/asm.h>
+
+ENTRY(__exp2l)
+	fldt	4(%esp)
+/* I added the following ugly construct because exp(+-Inf) resulted
+   in NaN.  The ugliness results from the bright minds at Intel.
+   For the i686 the code can be written better.
+   -- drepper@cygnus.com.  */
+	fxam				/* Is NaN or +-Inf?  */
+	fstsw	%ax
+	movb	$0x45, %dh
+	andb	%ah, %dh
+	cmpb	$0x05, %dh
+	je	1f			/* Is +-Inf, jump.  */
+	fld	%st
+	frndint				/* int(x) */
+	fsubr	%st,%st(1)		/* fract(x) */
+	fxch
+	f2xm1				/* 2^(fract(x)) - 1 */
+	fld1
+	faddp				/* 2^(fract(x)) */
+	fscale				/* e^x */
+	fstp	%st(1)
+	ret
+
+1:	testl	$0x200, %eax		/* Test sign.  */
+	jz	2f			/* If positive, jump.  */
+	fstp	%st
+	fldz				/* Set result to 0.  */
+2:	ret
+END (__exp2l)
+weak_alias (__exp2l, exp2l)
diff --git a/sysdeps/libm-i387/s_log2.S b/sysdeps/libm-i387/s_log2.S
new file mode 100644
index 0000000000..4632c96f67
--- /dev/null
+++ b/sysdeps/libm-i387/s_log2.S
@@ -0,0 +1,59 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Adapted for use as log2 by Ulrich Drepper <drepper@cygnus.com>.
+ * Public domain.
+ *
+ * Changed to use fyl2xp1 for values near 1, <drepper@cygnus.com>.
+ */
+
+#include <machine/asm.h>
+
+#ifdef __ELF__
+	.section .rodata
+#else
+	.text
+#endif
+	.align ALIGNARG(4)
+	ASM_TYPE_DIRECTIVE(one,@object)
+one:	.double 1.0
+	ASM_SIZE_DIRECTIVE(one)
+	/* It is not important that this constant is precise.  It is only
+	   a value which is known to be on the safe side for using the
+	   fyl2xp1 instruction.  */
+	ASM_TYPE_DIRECTIVE(limit,@object)
+limit:	.double 0.29
+	ASM_SIZE_DIRECTIVE(limit)
+
+
+#ifdef PIC
+#define MO(op) op##@GOTOFF(%edx)
+#else
+#define MO(op) op
+#endif
+
+	.text
+ENTRY(__log2)
+#ifdef PIC
+	call	1f
+1:	popl	%edx
+	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %edx
+#endif
+	fldl	MO(one)
+	fldl	4(%esp)		// x : 1
+	fld	%st		// x : x : 1
+	fsub	%st(2), %st	// x-1 : x : 1
+	fld	%st		// x-1 : x-1 : x : 1
+	fabs			// |x-1| : x-1 : x : 1
+	fcompl	MO(limit)	// x-1 : x : 1
+	fnstsw			// x-1 : x : 1
+	andb	$0x45, %ah
+	jz	2f
+	fstp	%st(1)		// x-1 : 1
+	fyl2xp1			// log(x)
+	ret
+
+2:	fstp	%st(0)		// x : 1
+	fyl2x			// log(x)
+	ret
+END (__log2)
+weak_alias (__log2, log2)
diff --git a/sysdeps/libm-i387/s_log2f.S b/sysdeps/libm-i387/s_log2f.S
new file mode 100644
index 0000000000..bfdd0ef88e
--- /dev/null
+++ b/sysdeps/libm-i387/s_log2f.S
@@ -0,0 +1,59 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Adapted for use as log2 by Ulrich Drepper <drepper@cygnus.com>.
+ * Public domain.
+ *
+ * Changed to use fyl2xp1 for values near 1, <drepper@cygnus.com>.
+ */
+
+#include <machine/asm.h>
+
+#ifdef __ELF__
+	.section .rodata
+#else
+	.text
+#endif
+	.align ALIGNARG(4)
+	ASM_TYPE_DIRECTIVE(one,@object)
+one:	.double 1.0
+	ASM_SIZE_DIRECTIVE(one)
+	/* It is not important that this constant is precise.  It is only
+	   a value which is known to be on the safe side for using the
+	   fyl2xp1 instruction.  */
+	ASM_TYPE_DIRECTIVE(limit,@object)
+limit:	.double 0.29
+	ASM_SIZE_DIRECTIVE(limit)
+
+
+#ifdef PIC
+#define MO(op) op##@GOTOFF(%edx)
+#else
+#define MO(op) op
+#endif
+
+	.text
+ENTRY(__log2f)
+#ifdef PIC
+	call	1f
+1:	popl	%edx
+	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %edx
+#endif
+	fldl	MO(one)
+	flds	4(%esp)		// x : 1
+	fld	%st		// x : x : 1
+	fsub	%st(2), %st	// x-1 : x : 1
+	fld	%st		// x-1 : x-1 : x : 1
+	fabs			// |x-1| : x-1 : x : 1
+	fcompl	MO(limit)	// x-1 : x : 1
+	fnstsw			// x-1 : x : 1
+	andb	$0x45, %ah
+	jz	2f
+	fstp	%st(1)		// x-1 : 1
+	fyl2xp1			// log(x)
+	ret
+
+2:	fstp	%st(0)		// x : 1
+	fyl2x			// log(x)
+	ret
+END (__log2f)
+weak_alias (__log2f, log2f)
diff --git a/sysdeps/libm-i387/s_log2l.S b/sysdeps/libm-i387/s_log2l.S
new file mode 100644
index 0000000000..184981c4bb
--- /dev/null
+++ b/sysdeps/libm-i387/s_log2l.S
@@ -0,0 +1,59 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Adapted for use as log2 by Ulrich Drepper <drepper@cygnus.com>.
+ * Public domain.
+ *
+ * Changed to use fyl2xp1 for values near 1, <drepper@cygnus.com>.
+ */
+
+#include <machine/asm.h>
+
+#ifdef __ELF__
+	.section .rodata
+#else
+	.text
+#endif
+	.align ALIGNARG(4)
+	ASM_TYPE_DIRECTIVE(one,@object)
+one:	.double 1.0
+	ASM_SIZE_DIRECTIVE(one)
+	/* It is not important that this constant is precise.  It is only
+	   a value which is known to be on the safe side for using the
+	   fyl2xp1 instruction.  */
+	ASM_TYPE_DIRECTIVE(limit,@object)
+limit:	.double 0.29
+	ASM_SIZE_DIRECTIVE(limit)
+
+
+#ifdef PIC
+#define MO(op) op##@GOTOFF(%edx)
+#else
+#define MO(op) op
+#endif
+
+	.text
+ENTRY(__log2l)
+#ifdef PIC
+	call	1f
+1:	popl	%edx
+	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %edx
+#endif
+	fldl	MO(one)
+	fldt	4(%esp)		// x : 1
+	fld	%st		// x : x : 1
+	fsub	%st(2), %st	// x-1 : x : 1
+	fld	%st		// x-1 : x-1 : x : 1
+	fabs			// |x-1| : x-1 : x : 1
+	fcompl	MO(limit)	// x-1 : x : 1
+	fnstsw			// x-1 : x : 1
+	andb	$0x45, %ah
+	jz	2f
+	fstp	%st(1)		// x-1 : 1
+	fyl2xp1			// log(x)
+	ret
+
+2:	fstp	%st(0)		// x : 1
+	fyl2x			// log(x)
+	ret
+END (__log2l)
+weak_alias (__log2l, log2l)