diff options
Diffstat (limited to 'sysdeps/ieee754')
21 files changed, 542 insertions, 2 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_f32xsubf64.c b/sysdeps/ieee754/dbl-64/s_f32xsubf64.c new file mode 100644 index 0000000000..568f43a880 --- /dev/null +++ b/sysdeps/ieee754/dbl-64/s_f32xsubf64.c @@ -0,0 +1,30 @@ +/* Subtract _Float64 values, converting the result to _Float32x. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define dsubl __hide_dsubl +#include <math.h> +#undef dsubl + +#include <math-narrow.h> + +_Float32x +__f32xsubf64 (_Float64 x, _Float64 y) +{ + NARROW_SUB_TRIVIAL (x, y, _Float32x); +} +libm_alias_float32x_float64 (sub) diff --git a/sysdeps/ieee754/dbl-64/s_fsub.c b/sysdeps/ieee754/dbl-64/s_fsub.c new file mode 100644 index 0000000000..c3b911e801 --- /dev/null +++ b/sysdeps/ieee754/dbl-64/s_fsub.c @@ -0,0 +1,34 @@ +/* Subtract double values, narrowing the result to float. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define f32subf64 __hide_f32subf64 +#define f32subf32x __hide_f32subf32x +#define fsubl __hide_fsubl +#include <math.h> +#undef f32subf64 +#undef f32subf32x +#undef fsubl + +#include <math-narrow.h> + +float +__fsub (double x, double y) +{ + NARROW_SUB_ROUND_TO_ODD (x, y, float, union ieee754_double, , mantissa1); +} +libm_alias_float_double (sub) diff --git a/sysdeps/ieee754/float128/float128_private.h b/sysdeps/ieee754/float128/float128_private.h index eebf19af93..7606026593 100644 --- a/sysdeps/ieee754/float128/float128_private.h +++ b/sysdeps/ieee754/float128/float128_private.h @@ -258,6 +258,8 @@ #define __faddl __f32addf128 #define __daddl __f64addf128 +#define __fsubl __f32subf128 +#define __dsubl __f64subf128 /* __nexttowardf128 is not _Float128 API. */ #define __nexttowardl __nexttowardf128_do_not_use diff --git a/sysdeps/ieee754/float128/s_f32subf128.c b/sysdeps/ieee754/float128/s_f32subf128.c new file mode 100644 index 0000000000..f1373f68ac --- /dev/null +++ b/sysdeps/ieee754/float128/s_f32subf128.c @@ -0,0 +1,6 @@ +#define f32subf64x __hide_f32subf64x +#define f32subf128 __hide_f32subf128 +#include <float128_private.h> +#undef f32subf64x +#undef f32subf128 +#include "../ldbl-128/s_fsubl.c" diff --git a/sysdeps/ieee754/float128/s_f64subf128.c b/sysdeps/ieee754/float128/s_f64subf128.c new file mode 100644 index 0000000000..89ef5a7cc6 --- /dev/null +++ b/sysdeps/ieee754/float128/s_f64subf128.c @@ -0,0 +1,10 @@ +#define f32xsubf64x __hide_f32xsubf64x +#define f32xsubf128 __hide_f32xsubf128 +#define f64subf64x __hide_f64subf64x +#define f64subf128 __hide_f64subf128 +#include <float128_private.h> +#undef f32xsubf64x +#undef f32xsubf128 +#undef f64subf64x +#undef f64subf128 +#include "../ldbl-128/s_dsubl.c" diff --git a/sysdeps/ieee754/float128/s_f64xsubf128.c b/sysdeps/ieee754/float128/s_f64xsubf128.c new file mode 100644 index 0000000000..64a0d6d82c --- /dev/null +++ b/sysdeps/ieee754/float128/s_f64xsubf128.c @@ -0,0 +1,2 @@ +#include <float128_private.h> +#include "../ldbl-128/s_f64xsubf128.c" diff --git a/sysdeps/ieee754/ldbl-128/s_dsubl.c b/sysdeps/ieee754/ldbl-128/s_dsubl.c new file mode 100644 index 0000000000..46d0f95b4c --- /dev/null +++ b/sysdeps/ieee754/ldbl-128/s_dsubl.c @@ -0,0 +1,37 @@ +/* Subtract long double (ldbl-128) values, narrowing the result to double. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define f32xsubf64x __hide_f32xsubf64x +#define f32xsubf128 __hide_f32xsubf128 +#define f64subf64x __hide_f64subf64x +#define f64subf128 __hide_f64subf128 +#include <math.h> +#undef f32xsubf64x +#undef f32xsubf128 +#undef f64subf64x +#undef f64subf128 + +#include <math-narrow.h> + +double +__dsubl (_Float128 x, _Float128 y) +{ + NARROW_SUB_ROUND_TO_ODD (x, y, double, union ieee854_long_double, l, + mantissa3); +} +libm_alias_double_ldouble (sub) diff --git a/sysdeps/ieee754/ldbl-128/s_f64xsubf128.c b/sysdeps/ieee754/ldbl-128/s_f64xsubf128.c new file mode 100644 index 0000000000..c9a63d9e84 --- /dev/null +++ b/sysdeps/ieee754/ldbl-128/s_f64xsubf128.c @@ -0,0 +1,38 @@ +/* Subtract _Float128 values, converting the result to _Float64x. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <math-narrow.h> + +/* math_ldbl.h defines _Float128 to long double for this directory, + but when they are different, this function must be defined with + _Float128 arguments to avoid defining an alias with an incompatible + type. */ +#undef _Float128 + +_Float64x +__f64xsubf128 (_Float128 x, _Float128 y) +{ +#if __HAVE_FLOAT64X_LONG_DOUBLE && __HAVE_DISTINCT_FLOAT128 + NARROW_SUB_ROUND_TO_ODD (x, y, _Float64x, union ieee854_long_double, l, + mantissa3); +#else + NARROW_SUB_TRIVIAL (x, y, _Float64x); +#endif +} +libm_alias_float64x_float128 (sub) diff --git a/sysdeps/ieee754/ldbl-128/s_fsubl.c b/sysdeps/ieee754/ldbl-128/s_fsubl.c new file mode 100644 index 0000000000..6a5e6b3173 --- /dev/null +++ b/sysdeps/ieee754/ldbl-128/s_fsubl.c @@ -0,0 +1,33 @@ +/* Subtract long double (ldbl-128) values, narrowing the result to float. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define f32subf64x __hide_f32subf64x +#define f32subf128 __hide_f32subf128 +#include <math.h> +#undef f32subf64x +#undef f32subf128 + +#include <math-narrow.h> + +float +__fsubl (_Float128 x, _Float128 y) +{ + NARROW_SUB_ROUND_TO_ODD (x, y, float, union ieee854_long_double, l, + mantissa3); +} +libm_alias_float_ldouble (sub) diff --git a/sysdeps/ieee754/ldbl-128ibm/s_dsubl.c b/sysdeps/ieee754/ldbl-128ibm/s_dsubl.c new file mode 100644 index 0000000000..e0e80f26a4 --- /dev/null +++ b/sysdeps/ieee754/ldbl-128ibm/s_dsubl.c @@ -0,0 +1,27 @@ +/* Subtract long double (ldbl-128ibm) values, narrowing the result to double. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <math-narrow.h> + +double +__dsubl (long double x, long double y) +{ + NARROW_SUB_TRIVIAL (x, y, double); +} +libm_alias_double_ldouble (sub) diff --git a/sysdeps/ieee754/ldbl-128ibm/s_fsubl.c b/sysdeps/ieee754/ldbl-128ibm/s_fsubl.c new file mode 100644 index 0000000000..aa6662de05 --- /dev/null +++ b/sysdeps/ieee754/ldbl-128ibm/s_fsubl.c @@ -0,0 +1,27 @@ +/* Subtract long double (ldbl-128ibm) values, narrowing the result to float. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <math-narrow.h> + +float +__fsubl (long double x, long double y) +{ + NARROW_SUB_TRIVIAL (x, y, float); +} +libm_alias_float_ldouble (sub) diff --git a/sysdeps/ieee754/ldbl-96/s_dsubl.c b/sysdeps/ieee754/ldbl-96/s_dsubl.c new file mode 100644 index 0000000000..5a855790f6 --- /dev/null +++ b/sysdeps/ieee754/ldbl-96/s_dsubl.c @@ -0,0 +1,33 @@ +/* Subtract long double (ldbl-96) values, narrowing the result to double. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define f32xsubf64x __hide_f32xsubf64x +#define f64subf64x __hide_f64subf64x +#include <math.h> +#undef f32xsubf64x +#undef f64subf64x + +#include <math-narrow.h> + +double +__dsubl (long double x, long double y) +{ + NARROW_SUB_ROUND_TO_ODD (x, y, double, union ieee854_long_double, l, + mantissa1); +} +libm_alias_double_ldouble (sub) diff --git a/sysdeps/ieee754/ldbl-96/s_fsubl.c b/sysdeps/ieee754/ldbl-96/s_fsubl.c new file mode 100644 index 0000000000..54aaf68b74 --- /dev/null +++ b/sysdeps/ieee754/ldbl-96/s_fsubl.c @@ -0,0 +1,31 @@ +/* Subtract long double (ldbl-96) values, narrowing the result to float. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define f32subf64x __hide_f32subf64x +#include <math.h> +#undef f32subf64x + +#include <math-narrow.h> + +float +__fsubl (long double x, long double y) +{ + NARROW_SUB_ROUND_TO_ODD (x, y, float, union ieee854_long_double, l, + mantissa1); +} +libm_alias_float_ldouble (sub) diff --git a/sysdeps/ieee754/ldbl-opt/Makefile b/sysdeps/ieee754/ldbl-opt/Makefile index 2340e4ce29..7cdeaad2f2 100644 --- a/sysdeps/ieee754/ldbl-opt/Makefile +++ b/sysdeps/ieee754/ldbl-opt/Makefile @@ -44,7 +44,8 @@ libnldbl-calls = asprintf dprintf fprintf fscanf fwprintf fwscanf iovfscanf \ isoc99_vwscanf isoc99_vfwscanf isoc99_vswscanf \ nextup nextdown totalorder totalordermag getpayload \ canonicalize setpayload setpayloadsig llogb fmaxmag fminmag \ - roundeven fromfp ufromfp fromfpx ufromfpx fadd dadd + roundeven fromfp ufromfp fromfpx ufromfpx fadd dadd \ + fsub dsub libnldbl-routines = $(libnldbl-calls:%=nldbl-%) libnldbl-inhibit-o = $(object-suffixes) libnldbl-static-only-routines = $(libnldbl-routines) @@ -87,6 +88,7 @@ CFLAGS-nldbl-csqrt.c = -fno-builtin-csqrtl CFLAGS-nldbl-ctan.c = -fno-builtin-ctanl CFLAGS-nldbl-ctanh.c = -fno-builtin-ctanhl CFLAGS-nldbl-dadd.c = -fno-builtin-daddl +CFLAGS-nldbl-dsub.c = -fno-builtin-dsubl CFLAGS-nldbl-erf.c = -fno-builtin-erfl CFLAGS-nldbl-erfc.c = -fno-builtin-erfcl CFLAGS-nldbl-exp.c = -fno-builtin-expl @@ -107,6 +109,7 @@ CFLAGS-nldbl-fmod.c = -fno-builtin-fmodl CFLAGS-nldbl-frexp.c = -fno-builtin-frexpl CFLAGS-nldbl-fromfp.c = -fno-builtin-fromfpl CFLAGS-nldbl-fromfpx.c = -fno-builtin-fromfpxl +CFLAGS-nldbl-fsub.c = -fno-builtin-fsubl CFLAGS-nldbl-gamma.c = -fno-builtin-gammal CFLAGS-nldbl-getpayload.c = -fno-builtin-getpayloadl CFLAGS-nldbl-hypot.c = -fno-builtin-hypotl diff --git a/sysdeps/ieee754/ldbl-opt/Versions b/sysdeps/ieee754/ldbl-opt/Versions index e50efa3520..c33dc42d81 100644 --- a/sysdeps/ieee754/ldbl-opt/Versions +++ b/sysdeps/ieee754/ldbl-opt/Versions @@ -101,6 +101,6 @@ libm { # Functions taking long double = double argument and rounding # result to double (same as f32x*f64 functions, but those names # are not reserved in TS 18661-1). - __nldbl_daddl; + __nldbl_daddl; __nldbl_dsubl; } } diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-compat.h b/sysdeps/ieee754/ldbl-opt/nldbl-compat.h index 74f0e459fa..4f5ae2dd26 100644 --- a/sysdeps/ieee754/ldbl-opt/nldbl-compat.h +++ b/sysdeps/ieee754/ldbl-opt/nldbl-compat.h @@ -104,5 +104,6 @@ extern void __nldbl___vsyslog_chk (int, int, const char *, va_list); /* The original declarations of these were hidden by the including file. */ extern double __nldbl_daddl (double, double) __THROW; +extern double __nldbl_dsubl (double, double) __THROW; #endif /* __NLDBL_COMPAT_H */ diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-dsub.c b/sysdeps/ieee754/ldbl-opt/nldbl-dsub.c new file mode 100644 index 0000000000..1d31a75f13 --- /dev/null +++ b/sysdeps/ieee754/ldbl-opt/nldbl-dsub.c @@ -0,0 +1,28 @@ +/* Compatibility routine for IEEE double as long double for dsub. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define dsubl __hide_dsubl +#include "nldbl-compat.h" +#undef dsubl + +double +attribute_hidden +dsubl (double x, double y) +{ + return __nldbl_dsubl (x, y); +} diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-fsub.c b/sysdeps/ieee754/ldbl-opt/nldbl-fsub.c new file mode 100644 index 0000000000..36dfe11a75 --- /dev/null +++ b/sysdeps/ieee754/ldbl-opt/nldbl-fsub.c @@ -0,0 +1,28 @@ +/* Compatibility routine for IEEE double as long double for fsub. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define fsubl __hide_fsubl +#include "nldbl-compat.h" +#undef fsubl + +float +attribute_hidden +fsubl (double x, double y) +{ + return fsub (x, y); +} diff --git a/sysdeps/ieee754/soft-fp/s_dsubl.c b/sysdeps/ieee754/soft-fp/s_dsubl.c new file mode 100644 index 0000000000..52f489c6ed --- /dev/null +++ b/sysdeps/ieee754/soft-fp/s_dsubl.c @@ -0,0 +1,59 @@ +/* Subtract long double (ldbl-128) values, narrowing the result to + double, using soft-fp. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define f32xsubf64x __hide_f32xsubf64x +#define f32xsubf128 __hide_f32xsubf128 +#define f64subf64x __hide_f64subf64x +#define f64subf128 __hide_f64subf128 +#include <math.h> +#undef f32xsubf64x +#undef f32xsubf128 +#undef f64subf64x +#undef f64subf128 + +#include <math-narrow.h> +#include <soft-fp.h> +#include <double.h> +#include <quad.h> + +double +__dsubl (_Float128 x, _Float128 y) +{ + FP_DECL_EX; + FP_DECL_Q (X); + FP_DECL_Q (Y); + FP_DECL_Q (R); + FP_DECL_D (RN); + double ret; + + FP_INIT_ROUNDMODE; + FP_UNPACK_SEMIRAW_Q (X, x); + FP_UNPACK_SEMIRAW_Q (Y, y); + FP_SUB_Q (R, X, Y); +#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q + FP_TRUNC (D, Q, 2, 4, RN, R); +#else + FP_TRUNC (D, Q, 1, 2, RN, R); +#endif + FP_PACK_SEMIRAW_D (ret, RN); + FP_HANDLE_EXCEPTIONS; + CHECK_NARROW_SUB (ret, x, y); + return ret; +} +libm_alias_double_ldouble (sub) diff --git a/sysdeps/ieee754/soft-fp/s_fsub.c b/sysdeps/ieee754/soft-fp/s_fsub.c new file mode 100644 index 0000000000..824a3abbc7 --- /dev/null +++ b/sysdeps/ieee754/soft-fp/s_fsub.c @@ -0,0 +1,56 @@ +/* Subtract double values, narrowing the result to float, using soft-fp. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define f32subf64 __hide_f32subf64 +#define f32subf32x __hide_f32subf32x +#define fsubl __hide_fsubl +#include <math.h> +#undef f32subf64 +#undef f32subf32x +#undef fsubl + +#include <math-narrow.h> +#include <soft-fp.h> +#include <single.h> +#include <double.h> + +float +__fsub (double x, double y) +{ + FP_DECL_EX; + FP_DECL_D (X); + FP_DECL_D (Y); + FP_DECL_D (R); + FP_DECL_S (RN); + float ret; + + FP_INIT_ROUNDMODE; + FP_UNPACK_SEMIRAW_D (X, x); + FP_UNPACK_SEMIRAW_D (Y, y); + FP_SUB_D (R, X, Y); +#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D + FP_TRUNC (S, D, 1, 2, RN, R); +#else + FP_TRUNC (S, D, 1, 1, RN, R); +#endif + FP_PACK_SEMIRAW_S (ret, RN); + FP_HANDLE_EXCEPTIONS; + CHECK_NARROW_SUB (ret, x, y); + return ret; +} +libm_alias_float_double (sub) diff --git a/sysdeps/ieee754/soft-fp/s_fsubl.c b/sysdeps/ieee754/soft-fp/s_fsubl.c new file mode 100644 index 0000000000..84b1013797 --- /dev/null +++ b/sysdeps/ieee754/soft-fp/s_fsubl.c @@ -0,0 +1,55 @@ +/* Subtract long double (ldbl-128) values, narrowing the result to + float, using soft-fp. + Copyright (C) 2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#define f32subf64x __hide_f32subf64x +#define f32subf128 __hide_f32subf128 +#include <math.h> +#undef f32subf64x +#undef f32subf128 + +#include <math-narrow.h> +#include <soft-fp.h> +#include <single.h> +#include <quad.h> + +float +__fsubl (_Float128 x, _Float128 y) +{ + FP_DECL_EX; + FP_DECL_Q (X); + FP_DECL_Q (Y); + FP_DECL_Q (R); + FP_DECL_S (RN); + float ret; + + FP_INIT_ROUNDMODE; + FP_UNPACK_SEMIRAW_Q (X, x); + FP_UNPACK_SEMIRAW_Q (Y, y); + FP_SUB_Q (R, X, Y); +#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q + FP_TRUNC (S, Q, 1, 4, RN, R); +#else + FP_TRUNC (S, Q, 1, 2, RN, R); +#endif + FP_PACK_SEMIRAW_S (ret, RN); + FP_HANDLE_EXCEPTIONS; + CHECK_NARROW_SUB (ret, x, y); + return ret; +} +libm_alias_float_ldouble (sub) |