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-rw-r--r--libm/Makefile.in21
-rw-r--r--libm/s_llround.c75
-rw-r--r--libm/s_lround.c75
-rw-r--r--libm/s_round.c92
4 files changed, 254 insertions, 9 deletions
diff --git a/libm/Makefile.in b/libm/Makefile.in
index a97624a06..465a5db4e 100644
--- a/libm/Makefile.in
+++ b/libm/Makefile.in
@@ -35,32 +35,35 @@ endif
FL_MSRC:=float_wrappers.c
ifeq ($(DO_C99_MATH),y)
-CSRC:= e_acos.c e_acosh.c e_asin.c e_atan2.c e_atanh.c e_cosh.c \
+CSRC:= \
+ e_acos.c e_acosh.c e_asin.c e_atan2.c e_atanh.c e_cosh.c \
e_exp.c e_fmod.c e_gamma.c e_gamma_r.c e_hypot.c e_j0.c \
e_j1.c e_jn.c e_lgamma.c e_lgamma_r.c e_log.c e_log10.c \
e_pow.c e_remainder.c e_rem_pio2.c e_scalb.c e_sinh.c \
e_sqrt.c k_cos.c k_rem_pio2.c k_sin.c k_standard.c k_tan.c \
s_asinh.c s_atan.c s_cbrt.c s_ceil.c s_copysign.c s_cos.c \
s_erf.c s_expm1.c s_fabs.c s_finite.c s_floor.c s_frexp.c \
- s_ilogb.c s_ldexp.c s_lib_version.c s_log1p.c s_logb.c \
- s_matherr.c s_modf.c s_nextafter.c s_rint.c s_scalbn.c \
- s_signgam.c s_significand.c s_sin.c s_tan.c s_tanh.c \
- w_acos.c w_acosh.c w_asin.c w_atan2.c w_atanh.c w_cabs.c \
+ s_ilogb.c s_ldexp.c s_lib_version.c s_lround.c s_llround.c \
+ s_log1p.c s_logb.c s_matherr.c s_modf.c s_nextafter.c s_round.c \
+ s_rint.c s_scalbn.c s_signgam.c s_significand.c s_sin.c s_tan.c \
+ s_tanh.c w_acos.c w_acosh.c w_asin.c w_atan2.c w_atanh.c w_cabs.c \
w_cosh.c w_drem.c w_exp.c w_fmod.c w_gamma.c w_gamma_r.c \
w_hypot.c w_j0.c w_j1.c w_jn.c w_lgamma.c w_lgamma_r.c \
w_log.c w_log10.c w_pow.c w_remainder.c w_scalb.c w_sinh.c \
w_sqrt.c fpmacros.c nan.c
-FL_MOBJ:=acosf.o acoshf.o asinf.o asinhf.o atan2f.o atanf.o atanhf.o cbrtf.o \
+FL_MOBJ:= \
+ acosf.o acoshf.o asinf.o asinhf.o atan2f.o atanf.o atanhf.o cbrtf.o \
ceilf.o copysignf.o cosf.o coshf.o erfcf.o erff.o exp2f.o expf.o \
expm1f.o fabsf.o fdimf.o floorf.o fmaf.o fmaxf.o fminf.o fmodf.o \
- frexpf.o hypotf.o ilogbf.o ldexpf.o lgammaf.o log10f.o log1pf.o \
- log2f.o logbf.o logf.o lrintf.o lroundf.o modff.o nearbyintf.o \
+ frexpf.o hypotf.o ilogbf.o ldexpf.o lgammaf.o llroundf.o log10f.o \
+ log1pf.o log2f.o logbf.o logf.o lrintf.o lroundf.o modff.o nearbyintf.o \
nextafterf.o powf.o remainderf.o remquof.o rintf.o roundf.o \
scalblnf.o scalbnf.o sinf.o sinhf.o sqrtf.o tanf.o tanhf.o \
tgammaf.o truncf.o
else
# This list of math functions was taken from POSIX/IEEE 1003.1b-1993
-CSRC:= w_acos.c w_asin.c s_atan.c w_atan2.c s_ceil.c s_cos.c \
+CSRC:= \
+ w_acos.c w_asin.c s_atan.c w_atan2.c s_ceil.c s_cos.c \
w_cosh.c w_exp.c s_fabs.c s_floor.c w_fmod.c s_frexp.c \
s_ldexp.c w_log.c w_log10.c s_modf.c w_pow.c s_sin.c \
w_sinh.c w_sqrt.c s_tan.c s_tanh.c \
diff --git a/libm/s_llround.c b/libm/s_llround.c
new file mode 100644
index 000000000..a07238896
--- /dev/null
+++ b/libm/s_llround.c
@@ -0,0 +1,75 @@
+/* Round double value to long long int.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <math.h>
+
+#include "math_private.h"
+
+
+long long int
+llround (double x)
+{
+ int32_t j0;
+ u_int32_t i1, i0;
+ long long int result;
+ int sign;
+
+ EXTRACT_WORDS (i0, i1, x);
+ j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
+ sign = (i0 & 0x80000000) != 0 ? -1 : 1;
+ i0 &= 0xfffff;
+ i0 |= 0x100000;
+
+ if (j0 < 20)
+ {
+ if (j0 < 0)
+ return j0 < -1 ? 0 : sign;
+ else
+ {
+ i0 += 0x80000 >> j0;
+
+ result = i0 >> (20 - j0);
+ }
+ }
+ else if (j0 < (int32_t) (8 * sizeof (long long int)) - 1)
+ {
+ if (j0 >= 52)
+ result = (((long long int) i0 << 32) | i1) << (j0 - 52);
+ else
+ {
+ u_int32_t j = i1 + (0x80000000 >> (j0 - 20));
+ if (j < i1)
+ ++i0;
+
+ if (j0 == 20)
+ result = (long long int) i0;
+ else
+ result = ((long long int) i0 << (j0 - 20)) | (j >> (52 - j0));
+ }
+ }
+ else
+ {
+ /* The number is too large. It is left implementation defined
+ what happens. */
+ return (long long int) x;
+ }
+
+ return sign * result;
+}
diff --git a/libm/s_lround.c b/libm/s_lround.c
new file mode 100644
index 000000000..5b1d5467e
--- /dev/null
+++ b/libm/s_lround.c
@@ -0,0 +1,75 @@
+/* Round double value to long int.
+ Copyright (C) 1997, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <math.h>
+
+#include "math_private.h"
+
+
+long int
+lround (double x)
+{
+ int32_t j0;
+ u_int32_t i1, i0;
+ long int result;
+ int sign;
+
+ EXTRACT_WORDS (i0, i1, x);
+ j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
+ sign = (i0 & 0x80000000) != 0 ? -1 : 1;
+ i0 &= 0xfffff;
+ i0 |= 0x100000;
+
+ if (j0 < 20)
+ {
+ if (j0 < 0)
+ return j0 < -1 ? 0 : sign;
+ else
+ {
+ i0 += 0x80000 >> j0;
+
+ result = i0 >> (20 - j0);
+ }
+ }
+ else if (j0 < (int32_t) (8 * sizeof (long int)) - 1)
+ {
+ if (j0 >= 52)
+ result = ((long int) i0 << (j0 - 20)) | (i1 << (j0 - 52));
+ else
+ {
+ u_int32_t j = i1 + (0x80000000 >> (j0 - 20));
+ if (j < i1)
+ ++i0;
+
+ if (j0 == 20)
+ result = (long int) i0;
+ else
+ result = ((long int) i0 << (j0 - 20)) | (j >> (52 - j0));
+ }
+ }
+ else
+ {
+ /* The number is too large. It is left implementation defined
+ what happens. */
+ return (long int) x;
+ }
+
+ return sign * result;
+}
diff --git a/libm/s_round.c b/libm/s_round.c
new file mode 100644
index 000000000..b2d009520
--- /dev/null
+++ b/libm/s_round.c
@@ -0,0 +1,92 @@
+/* Round double to integer away from zero.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <math.h>
+
+#include "math_private.h"
+
+
+static const double huge = 1.0e300;
+
+
+double
+round (double x)
+{
+ int32_t i0, j0;
+ u_int32_t i1;
+
+ EXTRACT_WORDS (i0, i1, x);
+ j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
+ if (j0 < 20)
+ {
+ if (j0 < 0)
+ {
+ if (huge + x > 0.0)
+ {
+ i0 &= 0x80000000;
+ if (j0 == -1)
+ i0 |= 0x3ff00000;
+ i1 = 0;
+ }
+ }
+ else
+ {
+ u_int32_t i = 0x000fffff >> j0;
+ if (((i0 & i) | i1) == 0)
+ /* X is integral. */
+ return x;
+ if (huge + x > 0.0)
+ {
+ /* Raise inexact if x != 0. */
+ i0 += 0x00080000 >> j0;
+ i0 &= ~i;
+ i1 = 0;
+ }
+ }
+ }
+ else if (j0 > 51)
+ {
+ if (j0 == 0x400)
+ /* Inf or NaN. */
+ return x + x;
+ else
+ return x;
+ }
+ else
+ {
+ u_int32_t i = 0xffffffff >> (j0 - 20);
+ if ((i1 & i) == 0)
+ /* X is integral. */
+ return x;
+
+ if (huge + x > 0.0)
+ {
+ /* Raise inexact if x != 0. */
+ u_int32_t j = i1 + (1 << (51 - j0));
+ if (j < i1)
+ i0 += 1;
+ i1 = j;
+ }
+ i1 &= ~i;
+ }
+
+ INSERT_WORDS (x, i0, i1);
+ return x;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 19:08:32 +0000