Add roundl(), lroundl(), and llroundl().

svn path=/head/; revision=144772

lib/msun/Makefile

@@ -47,12 +47,12 @@ COMMON_SRCS= b_exp.c b_log.c b_tgamma.c \
 	s_fmax.c s_fmaxf.c s_fmaxl.c s_fmin.c \
 	s_fminf.c s_fminl.c s_frexp.c s_frexpf.c s_ilogb.c s_ilogbf.c \
 	s_ilogbl.c s_isfinite.c s_isnan.c s_isnormal.c \
-	s_llrint.c s_llrintf.c s_llround.c s_llroundf.c \
+	s_llrint.c s_llrintf.c s_llround.c s_llroundf.c s_llroundl.c \
 	s_log1p.c s_log1pf.c s_logb.c s_logbf.c s_lrint.c s_lrintf.c \
-	s_lround.c s_lroundf.c s_modff.c \
+	s_lround.c s_lroundf.c s_lroundl.c s_modff.c \
 	s_nearbyint.c s_nextafter.c s_nextafterf.c \
 	s_nexttowardf.c s_remquo.c s_remquof.c \
-	s_rint.c s_rintf.c s_round.c s_roundf.c \
+	s_rint.c s_rintf.c s_round.c s_roundf.c s_roundl.c \
 	s_scalbln.c s_scalbn.c s_scalbnf.c s_signbit.c \
 	s_signgam.c s_significand.c s_significandf.c s_sin.c s_sinf.c s_tan.c \
 	s_tanf.c s_tanh.c s_tanhf.c s_trunc.c s_truncf.c \
@@ -137,14 +137,15 @@ MLINKS+=j0.3 j1.3 j0.3 jn.3 j0.3 y0.3 j0.3 y1.3 j0.3 y1f.3 j0.3 yn.3
 MLINKS+=j0.3 j0f.3 j0.3 j1f.3 j0.3 jnf.3 j0.3 y0f.3 j0.3 ynf.3
 MLINKS+=lgamma.3 gamma.3 lgamma.3 gammaf.3 lgamma.3 lgammaf.3 lgamma.3 tgamma.3
 MLINKS+=lrint.3 llrint.3 lrint.3 llrintf.3 lrint.3 lrintf.3
-MLINKS+=lround.3 llround.3 lround.3 llroundf.3 lround.3 lroundf.3
+MLINKS+=lround.3 llround.3 lround.3 llroundf.3 lround.3 llroundl.3 \
+	lround.3 lroundf.3 lround.3 lroundl.3
 MLINKS+=nextafter.3 nextafterf.3 nextafter.3 nextafterl.3
 MLINKS+=nextafter.3 nexttoward.3 nextafter.3 nexttowardf.3
 MLINKS+=nextafter.3 nexttowardl.3
 MLINKS+=remainder.3 remainderf.3
 MLINKS+=remainder.3 remquo.3 remainder.3 remquof.3
 MLINKS+=rint.3 rintf.3 rint.3 nearbyint.3 rint.3 nearbyintf.3
-MLINKS+=round.3 roundf.3
+MLINKS+=round.3 roundf.3 round.3 roundl.3
 MLINKS+=scalbn.3 scalbln.3 scalbn.3 scalblnf.3 scalbn.3 scalblnl.3
 MLINKS+=scalbn.3 scalbnf.3 scalbn.3 scalbnl.3
 MLINKS+=sin.3 sinf.3

lib/msun/man/lround.3

@@ -24,14 +24,16 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd January 11, 2005
+.Dd April 7, 2005
 .Dt LROUND 3
 .Os
 .Sh NAME
 .Nm llround ,
 .Nm llroundf ,
+.Nm llroundl ,
 .Nm lround ,
-.Nm lroundf
+.Nm lroundf ,
+.Nm lroundl
 .Nd "convert to nearest integral value"
 .Sh LIBRARY
 .Lb libm
@@ -41,10 +43,14 @@
 .Fn llround "double x"
 .Ft "long long"
 .Fn llroundf "float x"
+.Ft "long long"
+.Fn llroundl "long double x"
 .Ft long
 .Fn lround "double x"
 .Ft long
 .Fn lroundf "float x"
+.Ft long
+.Fn lroundl "long double x"
 .Sh DESCRIPTION
 The
 .Fn lround
@@ -70,8 +76,10 @@ is equivalent to
 The
 .Fn llround ,
 .Fn llroundf ,
-and
+.Fn llroundl ,
 .Fn lroundf
+and
+.Fn lroundl
 functions differ from
 .Fn lround
 only in their input and output types.
@@ -84,11 +92,21 @@ only in their input and output types.
 The
 .Fn llround ,
 .Fn llroundf ,
+.Fn llroundl ,
 .Fn lround ,
+.Fn lroundf ,
 and
-.Fn lroundf
+.Fn lroundl
 functions conform to
 .St -isoC-99 .
 .Sh HISTORY
-These routines first appeared in
+The
+.Ft float
+and
+.Ft double
+versions of these routines first appeared in
 .Fx 5.4 .
+The
+.Ft long double
+versions appeared in
+.Fx 6.0 .

lib/msun/man/round.3

@@ -24,12 +24,13 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 29, 2003
+.Dd April 7, 2005
 .Dt ROUND 3
 .Os
 .Sh NAME
 .Nm round ,
-.Nm roundf
+.Nm roundf ,
+.Nm roundl
 .Nd round to nearest integral value
 .Sh LIBRARY
 .Lb libm
@@ -39,11 +40,14 @@
 .Fn round "double x"
 .Ft float
 .Fn roundf "float x"
+.Ft long double
+.Fn roundl "long double x"
 .Sh DESCRIPTION
 The
-.Fn round
+.Fn round ,
+.Fn roundf ,
 and
-.Fn roundf
+.Fn roundl
 functions return the nearest integral value to
 .Fa x ;
 if
@@ -61,9 +65,7 @@ absolute value (i.e., they round away from zero).
 .Xr rint 3 ,
 .Xr trunc 3
 .Sh STANDARDS
-The
-.Fn round
-function conforms to
+These functions conform to
 .St -isoC-99 .
 .Sh HISTORY
 The
@@ -72,3 +74,7 @@ and
 .Fn roundf
 functions appeared in
 .Fx 5.3 .
+The
+.Fn roundl
+function appeared in
+.Fx 6.0 .

lib/msun/src/math.h

@@ -428,14 +428,18 @@ long double	ldexpl(long double, int);
 #if 0
 long double	lgammal(long double);
 long long	llrintl(long double);
+#endif
 long long	llroundl(long double);
+#if 0
 long double	log10l(long double);
 long double	log1pl(long double);
 long double	log2l(long double);
 long double	logbl(long double);
 long double	logl(long double);
 long		lrintl(long double);
+#endif
 long		lroundl(long double);
+#if 0
 long double	modfl(long double, long double *); /* fundamentally !__pure2 */
 long double	nanl(const char *) __pure2;
 long double	nearbyintl(long double);
@@ -449,8 +453,8 @@ long double	powl(long double, long double);
 long double	remainderl(long double, long double);
 long double	remquol(long double, long double, int *);
 long double	rintl(long double);
-long double	roundl(long double);
 #endif
+long double	roundl(long double);
 long double	scalblnl(long double, long);
 long double	scalbnl(long double, int);
 #if 0

lib/msun/src/s_llroundl.c

@@ -0,0 +1,11 @@
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#define type		long double
+#define	roundit		roundl
+#define dtype		long long
+#define	DTYPE_MIN	LLONG_MIN
+#define	DTYPE_MAX	LLONG_MAX
+#define	fn		llroundl
+
+#include "s_lround.c"

lib/msun/src/s_lroundl.c

@@ -0,0 +1,11 @@
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#define type		long double
+#define	roundit		roundl
+#define dtype		long
+#define	DTYPE_MIN	LONG_MIN
+#define	DTYPE_MAX	LONG_MAX
+#define	fn		lroundl
+
+#include "s_lround.c"

lib/msun/src/s_roundl.c

@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 2003, Steven G. Kargl
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <math.h>
+
+long double
+roundl(long double x)
+{
+	long double t;
+
+	if (!isfinite(x))
+		return (x);
+
+	if (x >= 0.0) {
+		t = ceill(x);
+		if (t - x > 0.5)
+			t -= 1.0;
+		return (t);
+	} else {
+		t = ceill(-x);
+		if (t + x > 0.5)
+			t -= 1.0;
+		return (-t);
+	}
+}