diff options
author | Ulrich Drepper <drepper@redhat.com> | 2005-01-06 11:32:24 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 2005-01-06 11:32:24 +0000 |
commit | bb803bff5cb97b3de94896aba1c4ec0d67227524 (patch) | |
tree | fd7dc0ee4cdec5b9846bad73448537efc718f151 /sysdeps/ia64/fpu/s_libm_ldexp.S | |
parent | ef07fd10d992d6af9657dbbd58b2465828bec516 (diff) | |
download | glibc-bb803bff5cb97b3de94896aba1c4ec0d67227524.tar.gz glibc-bb803bff5cb97b3de94896aba1c4ec0d67227524.tar.xz glibc-bb803bff5cb97b3de94896aba1c4ec0d67227524.zip |
Update. cvs/fedora-glibc-20050106T1443
2004-12-29 Jakub Jelinek <jakub@redhat.com> * sysdeps/ia64/fpu/libm_support.h (__libm_error_support): Use libc_hidden_proto instead of HIDDEN_PROTO. * sysdeps/ia64/fpu/libm-symbols.h (HIDDEN_PROTO): Remove. (__libm_error_support): If ASSEMBLER and in libc, define to HIDDEN_JUMPTARGET(__libm_error_support). 2004-12-28 David Mosberger <davidm@hpl.hp.com> * sysdeps/ia64/fpu/Makefile (duplicated-routines): New macro. (sysdep_routines): Replace libm_ldexp{,f,l} and libm_scalbn{,f,l} with $(duplicated-routines). (libm-sysdep_routines): Likewise, but substitute "s_" prefix for "m_" prefix. 2004-12-27 David Mosberger <davidm@hpl.hp.com> * sysdeps/ia64/fpu/libm-symbols.h: Add include of <sysdep.h> and undefine "ret" macro. Add __libm_error_support hidden definitions. * sysdeps/ia64/fpu/e_lgamma_r.c: Remove CVS-id comment. Add missing portion of copyright statement. * sysdeps/ia64/fpu/e_lgammaf_r.c: Likewise. * sysdeps/ia64/fpu/e_lgammal_r.c: Likewise. * sysdeps/ia64/fpu/w_lgamma.c: Remove CVS-id comment. Add missing portion of copyright statement. (__ieee754_lgamma): Rename from lgamma(). Make lgamma() a weak alias. (__ieee754_gamma): Likewise. * sysdeps/ia64/fpu/w_lgammaf.c: Likewise. * sysdeps/ia64/fpu/w_lgammal.c: Likewise. 2004-12-09 H. J. Lu <hjl@lucon.org> * sysdeps/ia64/fpu/s_nextafterl.c: Remove. * sysdeps/ia64/fpu/s_nexttoward.c: Likewise. * sysdeps/ia64/fpu/s_nexttowardf.c: Likewise. * sysdeps/ia64/fpu/e_atan2l.S: Remove (duplicate of e_atan2l.c). * sysdeps/ia64/fpu/e_expl.S: Likewise. * sysdeps/ia64/fpu/e_logl.c: Remove (conflicts with e_logl.S). 2004-11-18 David Mosberger <davidm@hpl.hp.com> * sysdeps/ia64/fpu/README: New file. * sysdeps/ia64/fpu/gen_import_file_list: New file. * sysdeps/ia64/fpu/import_check: Likewise. * sysdeps/ia64/fpu/import_diffs: Likewise. * sysdeps/ia64/fpu/import_file.awk: Likewise. * sysdeps/ia64/fpu/import_intel_libm: Likewise. * sysdeps/ia64/fpu/libm-symbols.h: Likewise. * sysdeps/ia64/fpu/e_acos.S: Update from Intel libm v2.1+. * sysdeps/ia64/fpu/e_acosf.S: Likewise. * sysdeps/ia64/fpu/e_acosl.S: Likewise. * sysdeps/ia64/fpu/e_asin.S: Likewise. * sysdeps/ia64/fpu/e_asinf.S: Likewise. * sysdeps/ia64/fpu/e_asinl.S: Likewise. * sysdeps/ia64/fpu/e_atan2.S: Likewise. * sysdeps/ia64/fpu/e_atan2f.S: Likewise. * sysdeps/ia64/fpu/e_cosh.S: Likewise. * sysdeps/ia64/fpu/e_coshf.S: Likewise. * sysdeps/ia64/fpu/e_coshl.S: Likewise. * sysdeps/ia64/fpu/e_exp.S: Likewise. * sysdeps/ia64/fpu/e_expf.S: Likewise. * sysdeps/ia64/fpu/e_fmod.S: Likewise. * sysdeps/ia64/fpu/e_fmodf.S: Likewise. * sysdeps/ia64/fpu/e_fmodl.S: Likewise. * sysdeps/ia64/fpu/e_hypot.S: Likewise. * sysdeps/ia64/fpu/e_hypotf.S: Likewise. * sysdeps/ia64/fpu/e_hypotl.S: Likewise. * sysdeps/ia64/fpu/e_log.S: Likewise. * sysdeps/ia64/fpu/e_log2.S: Likewise. * sysdeps/ia64/fpu/e_log2f.S: Likewise. * sysdeps/ia64/fpu/e_log2l.S: Likewise. * sysdeps/ia64/fpu/e_logf.S: Likewise. * sysdeps/ia64/fpu/e_pow.S: Likewise. * sysdeps/ia64/fpu/e_powf.S: Likewise. * sysdeps/ia64/fpu/e_powl.S: Likewise. * sysdeps/ia64/fpu/e_remainder.S: Likewise. * sysdeps/ia64/fpu/e_remainderf.S: Likewise. * sysdeps/ia64/fpu/e_remainderl.S: Likewise. * sysdeps/ia64/fpu/e_scalb.S: Likewise. * sysdeps/ia64/fpu/e_scalbf.S: Likewise. * sysdeps/ia64/fpu/e_scalbl.S: Likewise. * sysdeps/ia64/fpu/e_sinh.S: Likewise. * sysdeps/ia64/fpu/e_sinhf.S: Likewise. * sysdeps/ia64/fpu/e_sinhl.S: Likewise. * sysdeps/ia64/fpu/e_sqrt.S: Likewise. * sysdeps/ia64/fpu/e_sqrtf.S: Likewise. * sysdeps/ia64/fpu/e_sqrtl.S: Likewise. * sysdeps/ia64/fpu/libm_error.c: Likewise. * sysdeps/ia64/fpu/libm_reduce.c: Likewise. * sysdeps/ia64/fpu/libm_support.h: Likewise. * sysdeps/ia64/fpu/s_atan.S: Likewise. * sysdeps/ia64/fpu/s_atanf.S: Likewise. * sysdeps/ia64/fpu/s_atanl.S: Likewise. * sysdeps/ia64/fpu/s_cbrt.S: Likewise. * sysdeps/ia64/fpu/s_cbrtf.S: Likewise. * sysdeps/ia64/fpu/s_cbrtl.S: Likewise. * sysdeps/ia64/fpu/s_ceil.S: Likewise. * sysdeps/ia64/fpu/s_ceilf.S: Likewise. * sysdeps/ia64/fpu/s_ceill.S: Likewise. * sysdeps/ia64/fpu/s_cos.S: Likewise. * sysdeps/ia64/fpu/s_cosf.S: Likewise. * sysdeps/ia64/fpu/s_cosl.S: Likewise. * sysdeps/ia64/fpu/s_expm1.S: Likewise. * sysdeps/ia64/fpu/s_expm1f.S: Likewise. * sysdeps/ia64/fpu/s_expm1l.S: Likewise. * sysdeps/ia64/fpu/s_fabs.S: Likewise. * sysdeps/ia64/fpu/s_fabsf.S: Likewise. * sysdeps/ia64/fpu/s_fabsl.S: Likewise. * sysdeps/ia64/fpu/s_floor.S: Likewise. * sysdeps/ia64/fpu/s_floorf.S: Likewise. * sysdeps/ia64/fpu/s_floorl.S: Likewise. * sysdeps/ia64/fpu/s_frexp.c: Likewise. * sysdeps/ia64/fpu/s_frexpf.c: Likewise. * sysdeps/ia64/fpu/s_frexpl.c: Likewise. * sysdeps/ia64/fpu/s_ilogb.S: Likewise. * sysdeps/ia64/fpu/s_ilogbf.S: Likewise. * sysdeps/ia64/fpu/s_ilogbl.S: Likewise. * sysdeps/ia64/fpu/s_log1p.S: Likewise. * sysdeps/ia64/fpu/s_log1pf.S: Likewise. * sysdeps/ia64/fpu/s_log1pl.S: Likewise. * sysdeps/ia64/fpu/s_logb.S: Likewise. * sysdeps/ia64/fpu/s_logbf.S: Likewise. * sysdeps/ia64/fpu/s_logbl.S: Likewise. * sysdeps/ia64/fpu/s_modf.S: Likewise. * sysdeps/ia64/fpu/s_modff.S: Likewise. * sysdeps/ia64/fpu/s_modfl.S: Likewise. * sysdeps/ia64/fpu/s_nearbyint.S: Likewise. * sysdeps/ia64/fpu/s_nearbyintf.S: Likewise. * sysdeps/ia64/fpu/s_nearbyintl.S: Likewise. * sysdeps/ia64/fpu/s_rint.S: Likewise. * sysdeps/ia64/fpu/s_rintf.S: Likewise. * sysdeps/ia64/fpu/s_rintl.S: Likewise. * sysdeps/ia64/fpu/s_round.S: Likewise. * sysdeps/ia64/fpu/s_roundf.S: Likewise. * sysdeps/ia64/fpu/s_roundl.S: Likewise. * sysdeps/ia64/fpu/s_significand.S: Likewise. * sysdeps/ia64/fpu/s_significandf.S: Likewise. * sysdeps/ia64/fpu/s_significandl.S: Likewise. * sysdeps/ia64/fpu/s_tan.S: Likewise. * sysdeps/ia64/fpu/s_tanf.S: Likewise. * sysdeps/ia64/fpu/s_tanl.S: Likewise. * sysdeps/ia64/fpu/s_trunc.S: Likewise. * sysdeps/ia64/fpu/s_truncf.S: Likewise. * sysdeps/ia64/fpu/s_truncl.S: Likewise. * sysdeps/ia64/fpu/e_acosh.S: New file from Intel libm v2.1+. * sysdeps/ia64/fpu/e_acoshf.S: Likewise. * sysdeps/ia64/fpu/e_acoshl.S: Likewise. * sysdeps/ia64/fpu/e_atanh.S: Likewise. * sysdeps/ia64/fpu/e_atanhf.S: Likewise. * sysdeps/ia64/fpu/e_atanhl.S: Likewise. * sysdeps/ia64/fpu/e_exp10.S: Likewise. * sysdeps/ia64/fpu/e_exp10f.S: Likewise. * sysdeps/ia64/fpu/e_exp10l.S: Likewise. * sysdeps/ia64/fpu/e_exp2.S: Likewise. * sysdeps/ia64/fpu/e_exp2f.S: Likewise. * sysdeps/ia64/fpu/e_exp2l.S: Likewise. * sysdeps/ia64/fpu/e_lgamma_r.S: Likewise. * sysdeps/ia64/fpu/e_lgammaf_r.S: Likewise. * sysdeps/ia64/fpu/e_lgammal_r.S: Likewise. * sysdeps/ia64/fpu/e_logl.S: Likewise. * sysdeps/ia64/fpu/libm_frexp.S: Likewise. * sysdeps/ia64/fpu/libm_frexpf.S: Likewise. * sysdeps/ia64/fpu/libm_frexpl.S: Likewise. * sysdeps/ia64/fpu/s_libm_ldexp.S: Likewise. * sysdeps/ia64/fpu/s_libm_ldexpf.S: Likewise. * sysdeps/ia64/fpu/s_libm_ldexpl.S: Likewise. * sysdeps/ia64/fpu/s_libm_scalbn.S: Likewise. * sysdeps/ia64/fpu/s_libm_scalbnf.S: Likewise. * sysdeps/ia64/fpu/s_libm_scalbnl.S: Likewise. * sysdeps/ia64/fpu/libm_lgamma.S: Likewise. * sysdeps/ia64/fpu/libm_lgammaf.S: Likewise. * sysdeps/ia64/fpu/libm_lgammal.S: Likewise. * sysdeps/ia64/fpu/libm_sincos.S: Likewise. * sysdeps/ia64/fpu/libm_sincos_large.S: Likewise. * sysdeps/ia64/fpu/libm_sincosf.S: Likewise. * sysdeps/ia64/fpu/libm_sincosl.S: Likewise. * sysdeps/ia64/fpu/libm_scalblnf.S: Likewise. * sysdeps/ia64/fpu/s_asinh.S: Likewise. * sysdeps/ia64/fpu/s_asinhf.S: Likewise. * sysdeps/ia64/fpu/s_asinhl.S: Likewise. * sysdeps/ia64/fpu/s_erf.S: Likewise. * sysdeps/ia64/fpu/s_erfc.S: Likewise. * sysdeps/ia64/fpu/s_erfcf.S: Likewise. * sysdeps/ia64/fpu/s_erfcl.S: Likewise. * sysdeps/ia64/fpu/s_erff.S: Likewise. * sysdeps/ia64/fpu/s_erfl.S: Likewise. * sysdeps/ia64/fpu/s_fdim.S: Likewise. * sysdeps/ia64/fpu/s_fdimf.S: Likewise. * sysdeps/ia64/fpu/s_fdiml.S: Likewise. * sysdeps/ia64/fpu/s_fma.S: Likewise. * sysdeps/ia64/fpu/s_fmaf.S: Likewise. * sysdeps/ia64/fpu/s_fmal.S: Likewise. * sysdeps/ia64/fpu/s_fmax.S: Likewise. * sysdeps/ia64/fpu/s_fmaxf.S: Likewise. * sysdeps/ia64/fpu/s_fmaxl.S: Likewise. * sysdeps/ia64/fpu/s_ldexp.c: Likewise. * sysdeps/ia64/fpu/s_ldexpf.c: Likewise. * sysdeps/ia64/fpu/s_ldexpl.c: Likewise. * sysdeps/ia64/fpu/s_nextafter.S: Likewise. * sysdeps/ia64/fpu/s_nextafterf.S: Likewise. * sysdeps/ia64/fpu/s_nextafterl.S: Likewise. * sysdeps/ia64/fpu/s_nexttoward.S: Likewise. * sysdeps/ia64/fpu/s_nexttowardf.S: Likewise. * sysdeps/ia64/fpu/s_nexttowardl.S: Likewise. * sysdeps/ia64/fpu/s_tanh.S: Likewise. * sysdeps/ia64/fpu/s_tanhf.S: Likewise. * sysdeps/ia64/fpu/s_tanhl.S: Likewise. * sysdeps/ia64/fpu/s_scalblnf.c: Likewise. * sysdeps/ia64/fpu/w_lgamma.c: Likewise. * sysdeps/ia64/fpu/w_lgammaf.c: Likewise. * sysdeps/ia64/fpu/w_lgammal.c: Likewise. * sysdeps/ia64/fpu/w_tgamma.S: Likewise. * sysdeps/ia64/fpu/w_tgammaf.S: Likewise. * sysdeps/ia64/fpu/w_tgammal.S: Likewise. * sysdeps/ia64/fpu/e_gamma_r.c: New empty dummy-file. * sysdeps/ia64/fpu/e_gammaf_r.c: Likewise. * sysdeps/ia64/fpu/e_gammal_r.c: Likewise. * sysdeps/ia64/fpu/w_acosh.c: Likewise. * sysdeps/ia64/fpu/w_acoshf.c: Likewise. * sysdeps/ia64/fpu/w_acoshl.c: Likewise. * sysdeps/ia64/fpu/w_atanh.c: Likewise. * sysdeps/ia64/fpu/w_atanhf.c: Likewise. * sysdeps/ia64/fpu/w_atanhl.c: Likewise. * sysdeps/ia64/fpu/w_exp10.c: Likewise. * sysdeps/ia64/fpu/w_exp10f.c: Likewise. * sysdeps/ia64/fpu/w_exp10l.c: Likewise. * sysdeps/ia64/fpu/w_exp2.c: Likewise. * sysdeps/ia64/fpu/w_exp2f.c: Likewise. * sysdeps/ia64/fpu/w_exp2l.c: Likewise. * sysdeps/ia64/fpu/w_expl.c: Likewise. * sysdeps/ia64/fpu/e_expl.S: Likewise. * sysdeps/ia64/fpu/w_lgamma_r.c: Likewise. * sysdeps/ia64/fpu/w_lgammaf_r.c: Likewise. * sysdeps/ia64/fpu/w_lgammal_r.c: Likewise. * sysdeps/ia64/fpu/w_log2.c: Likewise. * sysdeps/ia64/fpu/w_log2f.c: Likewise. * sysdeps/ia64/fpu/w_log2l.c: Likewise. * sysdeps/ia64/fpu/w_sinh.c: Likewise. * sysdeps/ia64/fpu/w_sinhf.c: Likewise. * sysdeps/ia64/fpu/w_sinhl.c: Likewise. * sysdeps/ia64/fpu/libm_atan2_reg.S: Remove. * sysdeps/ia64/fpu/s_ldexp.S: Likewise. * sysdeps/ia64/fpu/s_ldexpf.S: Likewise. * sysdeps/ia64/fpu/s_ldexpl.S: Likewise. * sysdeps/ia64/fpu/s_scalbn.S: Likewise. * sysdeps/ia64/fpu/s_scalbnf.S: Likewise. * sysdeps/ia64/fpu/s_scalbnl.S: Likewise. * sysdeps/ia64/fpu/s_sincos.c: Make it an empty dummy-file. * sysdeps/ia64/fpu/s_sincosf.c: Likewise. * sysdeps/ia64/fpu/s_sincosl.c: Likewise. * sysdeps/ia64/fpu/e_atan2l.S: Add "Not needed" comment. * sysdeps/ia64/fpu/s_copysign.S: Add __libm_copysign{,f,l} alias for use by libm_error.c * sysdeps/ia64/fpu/Makefile (libm-sysdep_routines): Remove libm_atan2_reg, libm_tan, libm_frexp4{f,l}. Mention s_erfc{,f,l}, libm_frexp{,f,l}, libm_ldexp{,f,l}, libm_sincos{,f,l}, libm_sincos_large, libm_lgamma{,f,l}, libm_scalbn{,f,l}, libm_scalblnf. (sysdep_routines): Remove libm_frexp4{,f,l}. Mention libm_frexp{,f,l}, libm_ldexp{,f,l}, and libm_scalbn{,f,l}. (sysdep-CPPFLAGS): Add -include libm-symbols.h, -D__POSIX__, _D_LIB_VERSIONIMF=_LIB_VERSION, -DSIZE_LONG_INT_64, and -DSIZE_LONG_LONG_INT_64.
Diffstat (limited to 'sysdeps/ia64/fpu/s_libm_ldexp.S')
-rw-r--r-- | sysdeps/ia64/fpu/s_libm_ldexp.S | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/sysdeps/ia64/fpu/s_libm_ldexp.S b/sysdeps/ia64/fpu/s_libm_ldexp.S new file mode 100644 index 0000000000..1fc2c3f80c --- /dev/null +++ b/sysdeps/ia64/fpu/s_libm_ldexp.S @@ -0,0 +1,382 @@ +.file "libm_ldexp.s" + + +// Copyright (c) 2000 - 2003, Intel Corporation +// All rights reserved. +// +// Contributed 2000 by the Intel Numerics Group, Intel Corporation +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// * 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. +// +// * The name of Intel Corporation may not be used to endorse or promote +// products derived from this software without specific prior written +// permission. + +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "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 INTEL OR ITS +// CONTRIBUTORS 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. +// +// Intel Corporation is the author of this code, and requests that all +// problem reports or change requests be submitted to it directly at +// http://www.intel.com/software/products/opensource/libraries/num.htm. +// +// History +//============================================================== +// 02/02/00 Initial version +// 01/26/01 ldexp completely reworked and now standalone version +// 01/04/02 Added handling for int 32 or 64 bits +// 05/20/02 Cleaned up namespace and sf0 syntax +// 02/10/03 Reordered header: .section, .global, .proc, .align +// +// API +//============================================================== +// double __libm_ldexp (double x, int n, int int_type) +// input floating point f8 and int n (r33), int int_type (r34) +// output floating point f8 +// +// int_type = 0 if int is 32 bits +// int_type = 1 if int is 64 bits +// +// Returns x* 2**n using an fma and detects overflow +// and underflow. +// +// + +FR_Big = f6 +FR_NBig = f7 +FR_Floating_X = f8 +FR_Result = f8 +FR_Result2 = f9 +FR_Result3 = f11 +FR_Norm_X = f12 +FR_Two_N = f14 +FR_Two_to_Big = f15 + +GR_N_Biased = r15 +GR_Big = r16 +GR_NBig = r17 +GR_Scratch = r18 +GR_Scratch1 = r19 +GR_Bias = r20 +GR_N_as_int = r21 + +GR_SAVE_B0 = r32 +GR_SAVE_GP = r33 +GR_SAVE_PFS = r34 +GR_Parameter_X = r35 +GR_Parameter_Y = r36 +GR_Parameter_RESULT = r37 +GR_Tag = r38 + +.section .text +GLOBAL_LIBM_ENTRY(__libm_ldexp) + +// +// Is x NAN, INF, ZERO, +-? +// Build the exponent Bias +// +{ .mfi + alloc r32=ar.pfs,3,0,4,0 + fclass.m p7,p0 = FR_Floating_X, 0xe7 //@snan | @qnan | @inf | @zero + addl GR_Bias = 0x0FFFF,r0 +} + +// +// Is N zero? +// Normalize x +// Is integer type 32 bits? +// +{ .mfi + cmp.eq p6,p0 = r33,r0 + fnorm.s1 FR_Norm_X = FR_Floating_X + cmp.eq p8,p9 = r34,r0 +} +;; + +// Sign extend N if int is 32 bits +{ .mfi +(p9) mov GR_N_as_int = r33 // Copy N if int is 64 bits + nop.f 0 +(p8) sxt4 GR_N_as_int = r33 // Sign extend N if int is 32 bits +} +;; + +// +// Branch and return special values. +// Create -35000 +// Create 35000 +// +{ .mfi + addl GR_Big = 35000,r0 + nop.f 0 + add GR_N_Biased = GR_Bias,GR_N_as_int +} +{ .mfb + addl GR_NBig = -35000,r0 +(p7) fma.d.s0 FR_Result = FR_Floating_X,f1, f0 +(p7) br.ret.spnt b0 +};; + +// +// Build the exponent Bias +// Return x when N = 0 +// +{ .mfi + setf.exp FR_Two_N = GR_N_Biased + nop.f 0 + addl GR_Scratch1 = 0x063BF,r0 +} +{ .mfb + addl GR_Scratch = 0x019C3F,r0 +(p6) fma.d.s0 FR_Result = FR_Floating_X,f1, f0 +(p6) br.ret.spnt b0 +};; + +// +// Create 2*big +// Create 2**-big +// Is N > 35000 +// Is N < -35000 +// Raise Denormal operand flag with compare +// Main path, create 2**N +// +{ .mfi + setf.exp FR_NBig = GR_Scratch1 + nop.f 0 + cmp.ge p6, p0 = GR_N_as_int, GR_Big +} +{ .mfi + setf.exp FR_Big = GR_Scratch + fcmp.ge.s0 p0,p11 = FR_Floating_X,f0 + cmp.le p8, p0 = GR_N_as_int, GR_NBig +};; + +// +// Adjust 2**N if N was very small or very large +// +{ .mfi + nop.m 0 +(p6) fma.s1 FR_Two_N = FR_Big,f1,f0 + nop.i 0 +} +{ .mlx + nop.m 999 + movl GR_Scratch = 0x00000000000303FF +};; + + +{ .mfi + nop.m 0 +(p8) fma.s1 FR_Two_N = FR_NBig,f1,f0 + nop.i 0 +} +{ .mlx + nop.m 999 + movl GR_Scratch1= 0x00000000000103FF +};; + +// Set up necessary status fields +// +// S0 user supplied status +// S2 user supplied status + WRE + TD (Overflows) +// S3 user supplied status + FZ + TD (Underflows) +// +{ .mfi + nop.m 999 + fsetc.s3 0x7F,0x41 + nop.i 999 +} +{ .mfi + nop.m 999 + fsetc.s2 0x7F,0x42 + nop.i 999 +};; + +// +// Do final operation +// +{ .mfi + setf.exp FR_NBig = GR_Scratch + fma.d.s0 FR_Result = FR_Two_N,FR_Norm_X,f0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.d.s3 FR_Result3 = FR_Two_N,FR_Norm_X,f0 + nop.i 999 +};; +{ .mfi + setf.exp FR_Big = GR_Scratch1 + fma.d.s2 FR_Result2 = FR_Two_N,FR_Norm_X,f0 + nop.i 999 +};; + +// +// Check for overflow or underflow. +// Restore s3 +// Restore s2 +// +{ .mfi + nop.m 0 + fsetc.s3 0x7F,0x40 + nop.i 999 +} +{ .mfi + nop.m 0 + fsetc.s2 0x7F,0x40 + nop.i 999 +};; + +// +// Is the result zero? +// +{ .mfi + nop.m 999 + fclass.m p6, p0 = FR_Result3, 0x007 + nop.i 999 +} +{ .mfi + addl GR_Tag = 146, r0 + fcmp.ge.s1 p7, p8 = FR_Result2 , FR_Big + nop.i 0 +};; + +// +// Detect masked underflow - Tiny + Inexact Only +// +{ .mfi + nop.m 999 +(p6) fcmp.neq.unc.s1 p6, p0 = FR_Result , FR_Result2 + nop.i 999 +};; + +// +// Is result bigger the allowed range? +// Branch out for underflow +// +{ .mfb +(p6) addl GR_Tag = 147, r0 +(p8) fcmp.le.unc.s1 p9, p10 = FR_Result2 , FR_NBig +(p6) br.cond.spnt LDEXP_UNDERFLOW +};; + +// +// Branch out for overflow +// +{ .mbb + nop.m 0 +(p7) br.cond.spnt LDEXP_OVERFLOW +(p9) br.cond.spnt LDEXP_OVERFLOW +};; + +// +// Return from main path. +// +{ .mfb + nop.m 999 + nop.f 0 + br.ret.sptk b0;; +} + +GLOBAL_LIBM_END(__libm_ldexp) +__libm_error_region: + +LDEXP_OVERFLOW: +LDEXP_UNDERFLOW: + +// +// Get stack address of N +// +.prologue +{ .mfi + add GR_Parameter_Y=-32,sp + nop.f 0 +.save ar.pfs,GR_SAVE_PFS + mov GR_SAVE_PFS=ar.pfs +} +// +// Adjust sp +// +{ .mfi +.fframe 64 + add sp=-64,sp + nop.f 0 + mov GR_SAVE_GP=gp +};; + +// +// Store N on stack in correct position +// Locate the address of x on stack +// +{ .mmi + st8 [GR_Parameter_Y] = GR_N_as_int,16 + add GR_Parameter_X = 16,sp +.save b0, GR_SAVE_B0 + mov GR_SAVE_B0=b0 +};; + +// +// Store x on the stack. +// Get address for result on stack. +// +.body +{ .mib + stfd [GR_Parameter_X] = FR_Norm_X + add GR_Parameter_RESULT = 0,GR_Parameter_Y + nop.b 0 +} +{ .mib + stfd [GR_Parameter_Y] = FR_Result + add GR_Parameter_Y = -16,GR_Parameter_Y + br.call.sptk b0=__libm_error_support# +};; + +// +// Get location of result on stack +// +{ .mmi + nop.m 0 + nop.m 0 + add GR_Parameter_RESULT = 48,sp +};; + +// +// Get the new result +// +{ .mmi + ldfd FR_Result = [GR_Parameter_RESULT] +.restore sp + add sp = 64,sp + mov b0 = GR_SAVE_B0 +};; + +// +// Restore gp, ar.pfs and return +// +{ .mib + mov gp = GR_SAVE_GP + mov ar.pfs = GR_SAVE_PFS + br.ret.sptk b0 +};; + +LOCAL_LIBM_END(__libm_error_region) + +.type __libm_error_support#,@function +.global __libm_error_support# |