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Diffstat (limited to 'sysdeps/ia64/fpu/e_acos.S')
| -rw-r--r-- | sysdeps/ia64/fpu/e_acos.S | 904 |
1 files changed, 904 insertions, 0 deletions
diff --git a/sysdeps/ia64/fpu/e_acos.S b/sysdeps/ia64/fpu/e_acos.S new file mode 100644 index 0000000000..1d8085c989 --- /dev/null +++ b/sysdeps/ia64/fpu/e_acos.S @@ -0,0 +1,904 @@ +.file "acos.s" + +// Copyright (c) 2000, 2001, Intel Corporation +// All rights reserved. +// +// Contributed 2/2/2000 by John Harrison, Ted Kubaska, Bob Norin, Shane Story, +// and Ping Tak Peter Tang of the Computational Software Lab, Intel Corporation. +// +// WARRANTY DISCLAIMER +// +// 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://developer.intel.com/opensource. + +// History +//============================================================== +// 2/02/00 Initial version +// 8/17/00 New and much faster algorithm. +// 8/30/00 Avoided bank conflicts on loads, shortened |x|=1 and x=0 paths, +// fixed mfb split issue stalls. + +// Description +//========================================= +// The acos function computes the principle value of the arc sine of x. +// A doman error occurs for arguments not in the range [-1,+1]. + +// The acos function returns the arc cosine in the range [0, +pi] radians. +// acos(1) returns +0, acos(-1) returns pi, acos(0) returns pi/2. +// acos(x) returns a Nan and raises the invalid exception for |x| >1 + +// The acos function is just like asin except that pi/2 is added at the end. + +// +// Assembly macros +//========================================= + +#include "libm_support.h" + +// predicate registers +//acos_pred_LEsqrt2by2 = p7 +//acos_pred_GTsqrt2by2 = p8 + +// integer registers +ASIN_Addr1 = r33 +ASIN_Addr2 = r34 +ASIN_FFFE = r35 + +GR_SAVE_B0 = r36 +GR_SAVE_PFS = r37 +GR_SAVE_GP = r38 + +GR_Parameter_X = r39 +GR_Parameter_Y = r40 +GR_Parameter_RESULT = r41 +GR_Parameter_Tag = r42 + +// floating point registers +acos_coeff_P1 = f32 +acos_coeff_P2 = f33 +acos_coeff_P3 = f34 +acos_coeff_P4 = f35 + +acos_coeff_P5 = f36 +acos_coeff_P6 = f37 +acos_coeff_P7 = f38 +acos_coeff_P8 = f39 +acos_coeff_P9 = f40 + +acos_coeff_P10 = f41 +acos_coeff_P11 = f42 +acos_coeff_P12 = f43 +acos_coeff_P13 = f44 +acos_coeff_P14 = f45 + +acos_coeff_P15 = f46 +acos_coeff_P16 = f47 +acos_coeff_P17 = f48 +acos_coeff_P18 = f49 +acos_coeff_P19 = f50 + +acos_coeff_P20 = f51 +acos_coeff_P21 = f52 +acos_const_sqrt2by2 = f53 +acos_const_piby2 = f54 +acos_abs_x = f55 + +acos_tx = f56 +acos_tx2 = f57 +acos_tx3 = f58 +acos_tx4 = f59 +acos_tx8 = f60 + +acos_tx11 = f61 +acos_1poly_p8 = f62 +acos_1poly_p19 = f63 +acos_1poly_p4 = f64 +acos_1poly_p15 = f65 + +acos_1poly_p6 = f66 +acos_1poly_p17 = f67 +acos_1poly_p0 = f68 +acos_1poly_p11 = f69 +acos_1poly_p2 = f70 + +acos_1poly_p13 = f71 +acos_series_tx = f72 +acos_t = f73 +acos_t2 = f74 +acos_t3 = f75 + +acos_t4 = f76 +acos_t8 = f77 +acos_t11 = f78 +acos_poly_p8 = f79 +acos_poly_p19 = f80 + +acos_poly_p4 = f81 +acos_poly_p15 = f82 +acos_poly_p6 = f83 +acos_poly_p17 = f84 +acos_poly_p0 = f85 + +acos_poly_p11 = f86 +acos_poly_p2 = f87 +acos_poly_p13 = f88 +acos_series_t = f89 +acos_1by2 = f90 + +acos_3by2 = f91 +acos_5by2 = f92 +acos_11by4 = f93 +acos_35by8 = f94 +acos_63by8 = f95 + +acos_231by16 = f96 +acos_y0 = f97 +acos_H0 = f98 +acos_S0 = f99 +acos_d = f100 + +acos_l1 = f101 +acos_d2 = f102 +acos_T0 = f103 +acos_d1 = f104 +acos_e0 = f105 + +acos_l2 = f106 +acos_d3 = f107 +acos_T3 = f108 +acos_S1 = f109 +acos_e1 = f110 + +acos_z = f111 +answer2 = f112 +acos_sgn_x = f113 +acos_429by16 = f114 +acos_18by4 = f115 + +acos_3by4 = f116 +acos_l3 = f117 +acos_T6 = f118 +acos_const_add = f119 + +// Data tables +//============================================================== + +#ifdef _LIBC +.rodata +#else +.data +#endif + +.align 16 + +acos_coeff_1_table: +ASM_TYPE_DIRECTIVE(acos_coeff_1_table,@object) +data8 0xE4E7E0A423A21249 , 0x00003FF8 //P7 +data8 0xC2F7EE0200FCE2A5 , 0x0000C003 //P18 +data8 0xB745D7F6C65C20E0 , 0x00003FF9 //P5 +data8 0xF75E381A323D4D94 , 0x0000C002 //P16 +data8 0x8959C2629C1024C0 , 0x0000C002 //P20 +data8 0xAFF68E7D241292C5 , 0x00003FF8 //P9 +data8 0xB6DB6DB7260AC30D , 0x00003FFA //P3 +data8 0xD0417CE2B41CB7BF , 0x0000C000 //P14 +data8 0x81D570FEA724E3E4 , 0x0000BFFD //P12 +data8 0xAAAAAAAAAAAAC277 , 0x00003FFC //P1 +data8 0xF534912FF3E7B76F , 0x00003FFF //P21 +data8 0xc90fdaa22168c235 , 0x00003fff // pi/2 +data8 0x0000000000000000 , 0x00000000 // pad to avoid bank conflicts +ASM_SIZE_DIRECTIVE(acos_coeff_1_table) + + +acos_coeff_2_table: +ASM_TYPE_DIRECTIVE(acos_coeff_2_table,@object) +data8 0x8E26AF5F29B39A2A , 0x00003FF9 //P6 +data8 0xB4F118A4B1015470 , 0x00004003 //P17 +data8 0xF8E38E10C25990E0 , 0x00003FF9 //P4 +data8 0x80F50489AEF1CAC6 , 0x00004002 //P15 +data8 0x92728015172CFE1C , 0x00004003 //P19 +data8 0xBBC3D831D4595971 , 0x00003FF8 //P8 +data8 0x999999999952A5C3 , 0x00003FFB //P2 +data8 0x855576BE6F0975EC , 0x00003FFF //P13 +data8 0xF12420E778077D89 , 0x00003FFA //P11 +data8 0xB6590FF4D23DE003 , 0x00003FF3 //P10 +data8 0xb504f333f9de6484 , 0x00003ffe // sqrt(2)/2 +ASM_SIZE_DIRECTIVE(acos_coeff_2_table) + + +.align 32 +.global acos +ASM_TYPE_DIRECTIVE(acos,@function) + +.section .text +.proc acos +.align 32 + + +acos: + +{ .mfi + alloc r32 = ar.pfs,1,6,4,0 + fma.s1 acos_tx = f8,f8,f0 + addl ASIN_Addr2 = @ltoff(acos_coeff_2_table),gp +} +{ .mfi + mov ASIN_FFFE = 0xFFFE + fnma.s1 acos_t = f8,f8,f1 + addl ASIN_Addr1 = @ltoff(acos_coeff_1_table),gp +} +;; + + +{ .mfi + setf.exp acos_1by2 = ASIN_FFFE + fmerge.s acos_abs_x = f1,f8 + nop.i 999 ;; +} + + +{ .mmf + ld8 ASIN_Addr1 = [ASIN_Addr1] + ld8 ASIN_Addr2 = [ASIN_Addr2] + fmerge.s acos_sgn_x = f8,f1 +} +;; + + +{ .mfi + nop.m 999 + fcmp.lt.s1 p11,p12 = f8, f0 + nop.i 999 ;; +} + + +{ .mfi + ldfe acos_coeff_P7 = [ASIN_Addr1],16 + fma.s1 acos_tx2 = acos_tx,acos_tx,f0 + nop.i 999 +} +{ .mfi + ldfe acos_coeff_P6 = [ASIN_Addr2],16 + fma.s1 acos_t2 = acos_t,acos_t,f0 + nop.i 999;; +} + + +{ .mmf + ldfe acos_coeff_P18 = [ASIN_Addr1],16 + ldfe acos_coeff_P17 = [ASIN_Addr2],16 + fclass.m.unc p8,p0 = f8, 0xc3 //@qnan |@snan +} +;; + + +{ .mmf + ldfe acos_coeff_P5 = [ASIN_Addr1],16 + ldfe acos_coeff_P4 = [ASIN_Addr2],16 + frsqrta.s1 acos_y0,p0 = acos_t +} +;; + + +{ .mfi + ldfe acos_coeff_P16 = [ASIN_Addr1],16 + fcmp.gt.s1 p9,p0 = acos_abs_x,f1 + nop.i 999 +} +{ .mfb + ldfe acos_coeff_P15 = [ASIN_Addr2],16 +(p8) fma.d f8 = f8,f1,f0 +(p8) br.ret.spnt b0 +} +;; + + +{ .mmf + ldfe acos_coeff_P20 = [ASIN_Addr1],16 + ldfe acos_coeff_P19 = [ASIN_Addr2],16 + fclass.m.unc p10,p0 = f8, 0x07 //@zero +} +;; + + +{ .mfi + ldfe acos_coeff_P9 = [ASIN_Addr1],16 + fma.s1 acos_t4 = acos_t2,acos_t2,f0 +(p9) mov GR_Parameter_Tag = 58 +} +{ .mfi + ldfe acos_coeff_P8 = [ASIN_Addr2],16 + fma.s1 acos_3by2 = acos_1by2,f1,f1 + nop.i 999;; +} + + +{ .mfi + ldfe acos_coeff_P2 = [ASIN_Addr2],16 + fma.s1 acos_tx4 = acos_tx2,acos_tx2,f0 + nop.i 999 +} +{ .mfb + ldfe acos_coeff_P3 = [ASIN_Addr1],16 + fma.s1 acos_t3 = acos_t,acos_t2,f0 +(p9) br.cond.spnt __libm_error_region +} +;; + + +{ .mfi + ldfe acos_coeff_P13 = [ASIN_Addr2],16 + fma.s1 acos_H0 = acos_y0,acos_1by2,f0 + nop.i 999 +} +{ .mfi + ldfe acos_coeff_P14 = [ASIN_Addr1],16 + fma.s1 acos_S0 = acos_y0,acos_t,f0 + nop.i 999;; +} + + +{ .mfi + ldfe acos_coeff_P11 = [ASIN_Addr2],16 + fcmp.eq.s1 p6,p0 = acos_abs_x, f1 + nop.i 999 +} +{ .mfi + ldfe acos_coeff_P12 = [ASIN_Addr1],16 + fma.s1 acos_tx3 = acos_tx,acos_tx2,f0 + nop.i 999 +} +;; + + +{ .mfi + ldfe acos_coeff_P10 = [ASIN_Addr2],16 + fma.s1 acos_1poly_p6 = acos_tx,acos_coeff_P7,acos_coeff_P6 + nop.i 999 +} +{ .mfi + ldfe acos_coeff_P1 = [ASIN_Addr1],16 + fma.s1 acos_poly_p6 = acos_t,acos_coeff_P7,acos_coeff_P6 + nop.i 999;; +} + + +{ .mfi + ldfe acos_const_sqrt2by2 = [ASIN_Addr2],16 + fma.s1 acos_5by2 = acos_3by2,f1,f1 + nop.i 999 +} +{ .mfi + ldfe acos_coeff_P21 = [ASIN_Addr1],16 + fma.s1 acos_11by4 = acos_3by2,acos_3by2,acos_1by2 + nop.i 999;; +} + + +{ .mfi + ldfe acos_const_piby2 = [ASIN_Addr1],16 + fma.s1 acos_poly_p17 = acos_t,acos_coeff_P18,acos_coeff_P17 + nop.i 999 +} +{ .mfb + nop.m 999 + fma.s1 acos_3by4 = acos_3by2,acos_1by2,f0 +(p10) br.cond.spnt L(ACOS_ZERO) // Branch to short path if x=0 +} +;; + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p15 = acos_t,acos_coeff_P16,acos_coeff_P15 + nop.i 999 +} +{ .mfb + nop.m 999 + fnma.s1 acos_d = acos_S0,acos_H0,acos_1by2 +(p6) br.cond.spnt L(ACOS_ABS_ONE) // Branch to short path if |x|=1 +} +;; + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p19 = acos_t,acos_coeff_P20,acos_coeff_P19 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_poly_p4 = acos_t,acos_coeff_P5,acos_coeff_P4 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p17 = acos_tx,acos_coeff_P18,acos_coeff_P17 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_poly_p8 = acos_t,acos_coeff_P9,acos_coeff_P8 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fms.s1 acos_35by8 = acos_5by2,acos_11by4,acos_5by2 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_63by8 = acos_5by2,acos_11by4,f1 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p13 = acos_t,acos_coeff_P14,acos_coeff_P13 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_18by4 = acos_3by2,acos_5by2,acos_3by4 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_l1 = acos_5by2,acos_d,acos_3by2 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_d2 = acos_d,acos_d,f0 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p15 = acos_t2,acos_poly_p17,acos_poly_p15 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_T0 = acos_d,acos_S0,f0 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p19 = acos_t2,acos_coeff_P21,acos_poly_p19 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_poly_p4 = acos_t2,acos_poly_p6,acos_poly_p4 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_d1 = acos_35by8,acos_d,f0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_231by16 = acos_3by2,acos_35by8,acos_63by8 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p2 = acos_t,acos_coeff_P3,acos_coeff_P2 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_poly_p8 = acos_t2,acos_coeff_P10,acos_poly_p8 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p11 = acos_t,acos_coeff_P12,acos_coeff_P11 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_e0 = acos_d2,acos_l1,acos_d + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p15 = acos_tx,acos_coeff_P16,acos_coeff_P15 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_poly_p0 = acos_t,acos_coeff_P1,f1 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p19 = acos_tx,acos_coeff_P20,acos_coeff_P19 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p4 = acos_tx,acos_coeff_P5,acos_coeff_P4 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p8 = acos_tx,acos_coeff_P9,acos_coeff_P8 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_l2 = acos_231by16,acos_d,acos_63by8 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_d3 = acos_d2,acos_d,f0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_T3 = acos_d2,acos_T0,f0 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_429by16 = acos_18by4,acos_11by4,acos_231by16 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_S1 = acos_e0,acos_S0,acos_S0 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p4 = acos_t4,acos_poly_p8,acos_poly_p4 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_poly_p15 = acos_t4,acos_poly_p19,acos_poly_p15 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p0 = acos_t2,acos_poly_p2,acos_poly_p0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_poly_p11 = acos_t2,acos_poly_p13,acos_poly_p11 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_t8 = acos_t4,acos_t4,f0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_e1 = acos_d2,acos_l2,acos_d1 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p4 = acos_tx2,acos_1poly_p6,acos_1poly_p4 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p15 = acos_tx2,acos_1poly_p17,acos_1poly_p15 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p8 = acos_tx2,acos_coeff_P10,acos_1poly_p8 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p19 = acos_tx2,acos_coeff_P21,acos_1poly_p19 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p2 = acos_tx,acos_coeff_P3,acos_coeff_P2 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p13 = acos_tx,acos_coeff_P14,acos_coeff_P13 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p0 = acos_tx,acos_coeff_P1,f1 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p11 = acos_tx,acos_coeff_P12,acos_coeff_P11 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_l3 = acos_429by16,acos_d,f0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_z = acos_e1,acos_T3,acos_S1 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_poly_p11 = acos_t4,acos_poly_p15,acos_poly_p11 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_T6 = acos_T3,acos_d3,f0 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_t11 = acos_t8,acos_t3,f0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_poly_p0 = acos_t4,acos_poly_p4,acos_poly_p0 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p4 = acos_tx4,acos_1poly_p8,acos_1poly_p4 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p15 = acos_tx4,acos_1poly_p19,acos_1poly_p15 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p0 = acos_tx2,acos_1poly_p2,acos_1poly_p0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p11 = acos_tx2,acos_1poly_p13,acos_1poly_p11 + nop.i 999;; +} + + +{ .mfi + nop.m 999 +// fcmp.le.s1 acos_pred_LEsqrt2by2,acos_pred_GTsqrt2by2 = acos_abs_x,acos_const_sqrt2by2 + fcmp.le.s1 p7,p8 = acos_abs_x,acos_const_sqrt2by2 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_tx8 = acos_tx4,acos_tx4,f0 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_z = acos_l3,acos_T6,acos_z + nop.i 999;; +} + +{ .mfi + nop.m 999 + fma.s1 acos_series_t = acos_t11,acos_poly_p11,acos_poly_p0 + nop.i 999 +} +{ .mfi + nop.m 999 +(p11) fma.s1 acos_const_add = acos_const_piby2, f1, acos_const_piby2 + nop.i 999 +} +;; + +{ .mfi + nop.m 999 +(p12) fma.s1 acos_const_add = f1,f0,f0 + nop.i 999 +} +;; + +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p0 = acos_tx4,acos_1poly_p4,acos_1poly_p0 + nop.i 999 +} +{ .mfi + nop.m 999 + fma.s1 acos_1poly_p11 = acos_tx4,acos_1poly_p15,acos_1poly_p11 + nop.i 999;; +} + + +{ .mfi + nop.m 999 + fma.s1 acos_tx11 = acos_tx8,acos_tx3,f0 + nop.i 999;; +} + +{ .mfi + nop.m 999 +//(acos_pred_GTsqrt2by2) fnma.s1 answer2 = acos_z,acos_series_t,acos_const_piby2 +(p8) fnma.s1 answer2 = acos_z,acos_series_t,f0 + nop.i 999;; +} + +{ .mfi + nop.m 999 + fma.s1 acos_series_tx = acos_tx11,acos_1poly_p11,acos_1poly_p0 + nop.i 999;; +} + +{ .mfi + nop.m 999 +//(acos_pred_GTsqrt2by2) fnma.d f8 = acos_sgn_x,answer2,acos_const_piby2 +(p8) fnma.d f8 = acos_sgn_x,answer2,acos_const_add + nop.i 999;; +} + +{ .mfb + nop.m 999 +//(acos_pred_LEsqrt2by2) fnma.d f8 = f8,acos_series_tx,acos_const_piby2 +(p7) fnma.d f8 = f8,acos_series_tx,acos_const_piby2 + br.ret.sptk b0 ;; +} + + +L(ACOS_ZERO): +// Here if x=0 +{ .mfb + nop.m 999 + fma.d f8 = acos_const_piby2,f1,f0 + br.ret.sptk b0 ;; +} + + +L(ACOS_ABS_ONE): +.pred.rel "mutex",p11,p12 +// Here if |x|=1 +{ .mfi + nop.m 999 +(p11) fma.d f8 = acos_const_piby2,f1,acos_const_piby2 // acos(-1)=pi + nop.i 999 +} +{ .mfb + nop.m 999 +(p12) fma.d f8 = f1,f0,f0 // acos(1)=0 + br.ret.sptk b0 ;; +} + + +.endp acos +ASM_SIZE_DIRECTIVE(acos) + +.proc __libm_error_region +__libm_error_region: +.prologue +{ .mfi + add GR_Parameter_Y=-32,sp // Parameter 2 value + nop.f 999 +.save ar.pfs,GR_SAVE_PFS + mov GR_SAVE_PFS=ar.pfs // Save ar.pfs +} +{ .mfi +.fframe 64 + add sp=-64,sp // Create new stack + nop.f 0 + mov GR_SAVE_GP=gp // Save gp +};; +{ .mmi + stfs [GR_Parameter_Y] = f1,16 // Store Parameter 2 on stack + add GR_Parameter_X = 16,sp // Parameter 1 address +.save b0, GR_SAVE_B0 + mov GR_SAVE_B0=b0 // Save b0 +};; + +.body + frcpa.s0 f9,p0 = f0,f0 +;; + +{ .mib + stfd [GR_Parameter_X] = f8 // Store Parameter 1 on stack + add GR_Parameter_RESULT = 0,GR_Parameter_Y + nop.b 0 // Parameter 3 address +} +{ .mib + stfd [GR_Parameter_Y] = f9,-16 // Store Parameter 3 on stack + adds r32 = 48,sp + br.call.sptk b0=__libm_error_support# // Call error handling function +};; +{ .mmi + ldfd f8 = [r32] // Get return result off stack +.restore sp + add sp = 64,sp // Restore stack pointer + mov b0 = GR_SAVE_B0 // Restore return address +};; +{ .mib + mov gp = GR_SAVE_GP // Restore gp + mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs + br.ret.sptk b0 // Return + +};; + +.endp __libm_error_region +ASM_SIZE_DIRECTIVE(__libm_error_region) + +.type __libm_error_support,@function +.global __libm_error_support |