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+.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
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