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+.file "acoshf.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
+// ==============================================================
+// 03/28/01 Initial version
+// 04/19/01 Improved speed of the paths #1,2,3,4,5
+// 05/20/02 Cleaned up namespace and sf0 syntax
+// 02/06/03 Reordered header: .section, .global, .proc, .align
+// 05/14/03 Improved performance, set denormal flag for unorms >= 1.0
+//
+// API
+// ==============================================================
+// float acoshf(float)
+//
+// Overview of operation
+// ==============================================================
+//
+// There are 7 paths:
+// 1. x = 1.0
+// Return acoshf(x) = 0.0
+// 2. 1.0 < x < 1.000499725341796875(0x3FF0020C00000000)
+// Return acoshf(x) = sqrt(x-1) * Pol4(x),
+// where Pol4(x) = (x*C2 + C1)*(x-1) + C0
+//
+// 3. 1.000499725341796875(0x3FF0020C00000000) <= x < 2^51
+// Return acoshf(x) = log(x + sqrt(x^2 -1.0))
+// To compute x + sqrt(x^2 -1.0) modified Newton Raphson method is used
+// (2 iterations)
+// Algorithm description for log function see below.
+//
+// 4. 2^51 <= x < +INF
+// Return acoshf(x) = log(2*x)
+// Algorithm description for log function see below.
+//
+// 5. x = +INF
+// Return acoshf(x) = +INF
+//
+// 6. x = [S,Q]NaN
+// Return acoshf(x) = QNaN
+//
+// 7. x < 1.0
+// It's domain error. Error handler with tag = 137 is called
+//
+//==============================================================
+// Algorithm Description for log(x) function
+// Below we are using the fact that inequality x - 1.0 > 2^(-6) is always
+// true for this acosh implementation
+//
+// Consider x = 2^N 1.f1 f2 f3 f4...f63
+// Log(x) = log(frcpa(x) x/frcpa(x))
+// = log(1/frcpa(x)) + log(frcpa(x) x)
+// = -log(frcpa(x)) + log(frcpa(x) x)
+//
+// frcpa(x) = 2^-N frcpa((1.f1 f2 ... f63)
+//
+// -log(frcpa(x)) = -log(C)
+// = -log(2^-N) - log(frcpa(1.f1 f2 ... f63))
+//
+// -log(frcpa(x)) = -log(C)
+// = +Nlog2 - log(frcpa(1.f1 f2 ... f63))
+//
+// -log(frcpa(x)) = -log(C)
+// = +Nlog2 + log(frcpa(1.f1 f2 ... f63))
+//
+// Log(x) = log(1/frcpa(x)) + log(frcpa(x) x)
+//
+// Log(x) = +Nlog2 + log(1./frcpa(1.f1 f2 ... f63)) + log(frcpa(x) x)
+// Log(x) = +Nlog2 - log(/frcpa(1.f1 f2 ... f63)) + log(frcpa(x) x)
+// Log(x) = +Nlog2 + T + log(frcpa(x) x)
+//
+// Log(x) = +Nlog2 + T + log(C x)
+//
+// Cx = 1 + r
+//
+// Log(x) = +Nlog2 + T + log(1+r)
+// Log(x) = +Nlog2 + T + Series( r - r^2/2 + r^3/3 - r^4/4 ....)
+//
+// 1.f1 f2 ... f8 has 256 entries.
+// They are 1 + k/2^8, k = 0 ... 255
+// These 256 values are the table entries.
+//
+// Implementation
+//==============================================================
+// C = frcpa(x)
+// r = C * x - 1
+//
+// Form rseries = r + P1*r^2 + P2*r^3 + P3*r^4
+//
+// x = f * 2*n where f is 1.f_1f_2f_3....f_63
+// Nfloat = float(n) where n is the true unbiased exponent
+// pre-index = f_1f_2....f_8
+// index = pre_index * 8
+// get the dxt table entry at index + offset = T
+//
+// result = (T + Nfloat * log(2)) + rseries
+//
+// The T table is calculated as follows
+// Form x_k = 1 + k/2^8 where k goes from 0... 255
+// y_k = frcpa(x_k)
+// log(1/y_k) in quad and round to double
+//
+
+// Registers used
+//==============================================================
+// Floating Point registers used:
+// f8, input
+// f9 -> f15, f32 -> f62
+//
+// General registers used:
+// r14 -> r27, r32 -> r39
+//
+// Predicate registers used:
+// p6 -> p15
+//
+// p6 to filter out case when x = [Q,S]NaN
+// p7,p8 to filter out case when x < 1.0
+//
+// p10 to select path #1
+// p11 to filter out case when x = +INF
+// p12 used in the frcpa
+// p13 to select path #4
+// p14,p15 to select path #2
+
+// Assembly macros
+//==============================================================
+log_GR_exp_17_ones = r14
+log_GR_signexp_f8 = r15
+log_table_address2 = r16
+log_GR_exp_16_ones = r17
+log_GR_exp_f8 = r18
+log_GR_true_exp_f8 = r19
+log_GR_significand_f8 = r20
+log_GR_index = r21
+log_GR_comp2 = r22
+acosh_GR_f8 = r23
+log_GR_comp = r24
+acosh_GR_f8_sig = r25
+log_table_address3 = r26
+NR_table_address = r27
+
+GR_SAVE_B0 = r33
+GR_SAVE_GP = r34
+GR_SAVE_PFS = r35
+
+GR_Parameter_X = r36
+GR_Parameter_Y = r37
+GR_Parameter_RESULT = r38
+acosh_GR_tag = r39
+
+//==============================================================
+log_y = f9
+NR1 = f10
+NR2 = f11
+log_y_rs = f12
+log_y_rs_iter = f13
+log_y_rs_iter1 = f14
+log_NORM_f8 = f15
+log_w = f32
+acosh_comp = f34
+acosh_comp2 = f33
+log_P3 = f35
+log_P2 = f36
+log_P1 = f37
+log2 = f38
+log_C0 = f39
+log_C1 = f40
+log_C2 = f41
+acosh_w_rs = f42
+log_C = f43
+log_arg = f44
+acosh_w_iter1 = f45
+acosh_w_iter2 = f46
+log_int_Nfloat = f47
+log_r = f48
+log_rsq = f49
+log_rp_p4 = f50
+log_rp_p32 = f51
+log_rcube = f52
+log_rp_p10 = f53
+log_rp_p2 = f54
+log_Nfloat = f55
+log_T = f56
+log_r2P_r = f57
+log_T_plus_Nlog2 = f58
+acosh_w_sqrt = f59
+acosh_w_1 = f60
+log_arg_early = f61
+log_y_rs_iter2 = f62
+
+
+// Data tables
+//==============================================================
+
+RODATA
+.align 16
+
+LOCAL_OBJECT_START(log_table_1)
+data8 0xbfd0001008f39d59 // p3
+data8 0x3fd5556073e0c45a // p2
+data8 0xbfdffffffffaea15 // p1
+data8 0x3FE62E42FEFA39EF // log2
+LOCAL_OBJECT_END(log_table_1)
+
+LOCAL_OBJECT_START(log_table_2)
+
+data8 0x3FE0000000000000 // 0.5
+data8 0x4008000000000000 // 3.0
+data8 0xD92CBAD213719F11, 0x00003FF9 // C2 3FF9D92CBAD213719F11
+data8 0x93D38EBF2EC9B073, 0x0000BFFC // C1 BFFC93D38EBF2EC9B073
+data8 0xB504F333F9DA0E32, 0x00003FFF // C0 3FFFB504F333F9DA0E32
+LOCAL_OBJECT_END(log_table_2)
+
+LOCAL_OBJECT_START(log_table_3)
+data8 0x3F60040155D5889E //log(1/frcpa(1+ 0/256)
+data8 0x3F78121214586B54 //log(1/frcpa(1+ 1/256)
+data8 0x3F841929F96832F0 //log(1/frcpa(1+ 2/256)
+data8 0x3F8C317384C75F06 //log(1/frcpa(1+ 3/256)
+data8 0x3F91A6B91AC73386 //log(1/frcpa(1+ 4/256)
+data8 0x3F95BA9A5D9AC039 //log(1/frcpa(1+ 5/256)
+data8 0x3F99D2A8074325F4 //log(1/frcpa(1+ 6/256)
+data8 0x3F9D6B2725979802 //log(1/frcpa(1+ 7/256)
+data8 0x3FA0C58FA19DFAAA //log(1/frcpa(1+ 8/256)
+data8 0x3FA2954C78CBCE1B //log(1/frcpa(1+ 9/256)
+data8 0x3FA4A94D2DA96C56 //log(1/frcpa(1+ 10/256)
+data8 0x3FA67C94F2D4BB58 //log(1/frcpa(1+ 11/256)
+data8 0x3FA85188B630F068 //log(1/frcpa(1+ 12/256)
+data8 0x3FAA6B8ABE73AF4C //log(1/frcpa(1+ 13/256)
+data8 0x3FAC441E06F72A9E //log(1/frcpa(1+ 14/256)
+data8 0x3FAE1E6713606D07 //log(1/frcpa(1+ 15/256)
+data8 0x3FAFFA6911AB9301 //log(1/frcpa(1+ 16/256)
+data8 0x3FB0EC139C5DA601 //log(1/frcpa(1+ 17/256)
+data8 0x3FB1DBD2643D190B //log(1/frcpa(1+ 18/256)
+data8 0x3FB2CC7284FE5F1C //log(1/frcpa(1+ 19/256)
+data8 0x3FB3BDF5A7D1EE64 //log(1/frcpa(1+ 20/256)
+data8 0x3FB4B05D7AA012E0 //log(1/frcpa(1+ 21/256)
+data8 0x3FB580DB7CEB5702 //log(1/frcpa(1+ 22/256)
+data8 0x3FB674F089365A7A //log(1/frcpa(1+ 23/256)
+data8 0x3FB769EF2C6B568D //log(1/frcpa(1+ 24/256)
+data8 0x3FB85FD927506A48 //log(1/frcpa(1+ 25/256)
+data8 0x3FB9335E5D594989 //log(1/frcpa(1+ 26/256)
+data8 0x3FBA2B0220C8E5F5 //log(1/frcpa(1+ 27/256)
+data8 0x3FBB0004AC1A86AC //log(1/frcpa(1+ 28/256)
+data8 0x3FBBF968769FCA11 //log(1/frcpa(1+ 29/256)
+data8 0x3FBCCFEDBFEE13A8 //log(1/frcpa(1+ 30/256)
+data8 0x3FBDA727638446A2 //log(1/frcpa(1+ 31/256)
+data8 0x3FBEA3257FE10F7A //log(1/frcpa(1+ 32/256)
+data8 0x3FBF7BE9FEDBFDE6 //log(1/frcpa(1+ 33/256)
+data8 0x3FC02AB352FF25F4 //log(1/frcpa(1+ 34/256)
+data8 0x3FC097CE579D204D //log(1/frcpa(1+ 35/256)
+data8 0x3FC1178E8227E47C //log(1/frcpa(1+ 36/256)
+data8 0x3FC185747DBECF34 //log(1/frcpa(1+ 37/256)
+data8 0x3FC1F3B925F25D41 //log(1/frcpa(1+ 38/256)
+data8 0x3FC2625D1E6DDF57 //log(1/frcpa(1+ 39/256)
+data8 0x3FC2D1610C86813A //log(1/frcpa(1+ 40/256)
+data8 0x3FC340C59741142E //log(1/frcpa(1+ 41/256)
+data8 0x3FC3B08B6757F2A9 //log(1/frcpa(1+ 42/256)
+data8 0x3FC40DFB08378003 //log(1/frcpa(1+ 43/256)
+data8 0x3FC47E74E8CA5F7C //log(1/frcpa(1+ 44/256)
+data8 0x3FC4EF51F6466DE4 //log(1/frcpa(1+ 45/256)
+data8 0x3FC56092E02BA516 //log(1/frcpa(1+ 46/256)
+data8 0x3FC5D23857CD74D5 //log(1/frcpa(1+ 47/256)
+data8 0x3FC6313A37335D76 //log(1/frcpa(1+ 48/256)
+data8 0x3FC6A399DABBD383 //log(1/frcpa(1+ 49/256)
+data8 0x3FC70337DD3CE41B //log(1/frcpa(1+ 50/256)
+data8 0x3FC77654128F6127 //log(1/frcpa(1+ 51/256)
+data8 0x3FC7E9D82A0B022D //log(1/frcpa(1+ 52/256)
+data8 0x3FC84A6B759F512F //log(1/frcpa(1+ 53/256)
+data8 0x3FC8AB47D5F5A310 //log(1/frcpa(1+ 54/256)
+data8 0x3FC91FE49096581B //log(1/frcpa(1+ 55/256)
+data8 0x3FC981634011AA75 //log(1/frcpa(1+ 56/256)
+data8 0x3FC9F6C407089664 //log(1/frcpa(1+ 57/256)
+data8 0x3FCA58E729348F43 //log(1/frcpa(1+ 58/256)
+data8 0x3FCABB55C31693AD //log(1/frcpa(1+ 59/256)
+data8 0x3FCB1E104919EFD0 //log(1/frcpa(1+ 60/256)
+data8 0x3FCB94EE93E367CB //log(1/frcpa(1+ 61/256)
+data8 0x3FCBF851C067555F //log(1/frcpa(1+ 62/256)
+data8 0x3FCC5C0254BF23A6 //log(1/frcpa(1+ 63/256)
+data8 0x3FCCC000C9DB3C52 //log(1/frcpa(1+ 64/256)
+data8 0x3FCD244D99C85674 //log(1/frcpa(1+ 65/256)
+data8 0x3FCD88E93FB2F450 //log(1/frcpa(1+ 66/256)
+data8 0x3FCDEDD437EAEF01 //log(1/frcpa(1+ 67/256)
+data8 0x3FCE530EFFE71012 //log(1/frcpa(1+ 68/256)
+data8 0x3FCEB89A1648B971 //log(1/frcpa(1+ 69/256)
+data8 0x3FCF1E75FADF9BDE //log(1/frcpa(1+ 70/256)
+data8 0x3FCF84A32EAD7C35 //log(1/frcpa(1+ 71/256)
+data8 0x3FCFEB2233EA07CD //log(1/frcpa(1+ 72/256)
+data8 0x3FD028F9C7035C1C //log(1/frcpa(1+ 73/256)
+data8 0x3FD05C8BE0D9635A //log(1/frcpa(1+ 74/256)
+data8 0x3FD085EB8F8AE797 //log(1/frcpa(1+ 75/256)
+data8 0x3FD0B9C8E32D1911 //log(1/frcpa(1+ 76/256)
+data8 0x3FD0EDD060B78081 //log(1/frcpa(1+ 77/256)
+data8 0x3FD122024CF0063F //log(1/frcpa(1+ 78/256)
+data8 0x3FD14BE2927AECD4 //log(1/frcpa(1+ 79/256)
+data8 0x3FD180618EF18ADF //log(1/frcpa(1+ 80/256)
+data8 0x3FD1B50BBE2FC63B //log(1/frcpa(1+ 81/256)
+data8 0x3FD1DF4CC7CF242D //log(1/frcpa(1+ 82/256)
+data8 0x3FD214456D0EB8D4 //log(1/frcpa(1+ 83/256)
+data8 0x3FD23EC5991EBA49 //log(1/frcpa(1+ 84/256)
+data8 0x3FD2740D9F870AFB //log(1/frcpa(1+ 85/256)
+data8 0x3FD29ECDABCDFA04 //log(1/frcpa(1+ 86/256)
+data8 0x3FD2D46602ADCCEE //log(1/frcpa(1+ 87/256)
+data8 0x3FD2FF66B04EA9D4 //log(1/frcpa(1+ 88/256)
+data8 0x3FD335504B355A37 //log(1/frcpa(1+ 89/256)
+data8 0x3FD360925EC44F5D //log(1/frcpa(1+ 90/256)
+data8 0x3FD38BF1C3337E75 //log(1/frcpa(1+ 91/256)
+data8 0x3FD3C25277333184 //log(1/frcpa(1+ 92/256)
+data8 0x3FD3EDF463C1683E //log(1/frcpa(1+ 93/256)
+data8 0x3FD419B423D5E8C7 //log(1/frcpa(1+ 94/256)
+data8 0x3FD44591E0539F49 //log(1/frcpa(1+ 95/256)
+data8 0x3FD47C9175B6F0AD //log(1/frcpa(1+ 96/256)
+data8 0x3FD4A8B341552B09 //log(1/frcpa(1+ 97/256)
+data8 0x3FD4D4F3908901A0 //log(1/frcpa(1+ 98/256)
+data8 0x3FD501528DA1F968 //log(1/frcpa(1+ 99/256)
+data8 0x3FD52DD06347D4F6 //log(1/frcpa(1+ 100/256)
+data8 0x3FD55A6D3C7B8A8A //log(1/frcpa(1+ 101/256)
+data8 0x3FD5925D2B112A59 //log(1/frcpa(1+ 102/256)
+data8 0x3FD5BF406B543DB2 //log(1/frcpa(1+ 103/256)
+data8 0x3FD5EC433D5C35AE //log(1/frcpa(1+ 104/256)
+data8 0x3FD61965CDB02C1F //log(1/frcpa(1+ 105/256)
+data8 0x3FD646A84935B2A2 //log(1/frcpa(1+ 106/256)
+data8 0x3FD6740ADD31DE94 //log(1/frcpa(1+ 107/256)
+data8 0x3FD6A18DB74A58C5 //log(1/frcpa(1+ 108/256)
+data8 0x3FD6CF31058670EC //log(1/frcpa(1+ 109/256)
+data8 0x3FD6F180E852F0BA //log(1/frcpa(1+ 110/256)
+data8 0x3FD71F5D71B894F0 //log(1/frcpa(1+ 111/256)
+data8 0x3FD74D5AEFD66D5C //log(1/frcpa(1+ 112/256)
+data8 0x3FD77B79922BD37E //log(1/frcpa(1+ 113/256)
+data8 0x3FD7A9B9889F19E2 //log(1/frcpa(1+ 114/256)
+data8 0x3FD7D81B037EB6A6 //log(1/frcpa(1+ 115/256)
+data8 0x3FD8069E33827231 //log(1/frcpa(1+ 116/256)
+data8 0x3FD82996D3EF8BCB //log(1/frcpa(1+ 117/256)
+data8 0x3FD85855776DCBFB //log(1/frcpa(1+ 118/256)
+data8 0x3FD8873658327CCF //log(1/frcpa(1+ 119/256)
+data8 0x3FD8AA75973AB8CF //log(1/frcpa(1+ 120/256)
+data8 0x3FD8D992DC8824E5 //log(1/frcpa(1+ 121/256)
+data8 0x3FD908D2EA7D9512 //log(1/frcpa(1+ 122/256)
+data8 0x3FD92C59E79C0E56 //log(1/frcpa(1+ 123/256)
+data8 0x3FD95BD750EE3ED3 //log(1/frcpa(1+ 124/256)
+data8 0x3FD98B7811A3EE5B //log(1/frcpa(1+ 125/256)
+data8 0x3FD9AF47F33D406C //log(1/frcpa(1+ 126/256)
+data8 0x3FD9DF270C1914A8 //log(1/frcpa(1+ 127/256)
+data8 0x3FDA0325ED14FDA4 //log(1/frcpa(1+ 128/256)
+data8 0x3FDA33440224FA79 //log(1/frcpa(1+ 129/256)
+data8 0x3FDA57725E80C383 //log(1/frcpa(1+ 130/256)
+data8 0x3FDA87D0165DD199 //log(1/frcpa(1+ 131/256)
+data8 0x3FDAAC2E6C03F896 //log(1/frcpa(1+ 132/256)
+data8 0x3FDADCCC6FDF6A81 //log(1/frcpa(1+ 133/256)
+data8 0x3FDB015B3EB1E790 //log(1/frcpa(1+ 134/256)
+data8 0x3FDB323A3A635948 //log(1/frcpa(1+ 135/256)
+data8 0x3FDB56FA04462909 //log(1/frcpa(1+ 136/256)
+data8 0x3FDB881AA659BC93 //log(1/frcpa(1+ 137/256)
+data8 0x3FDBAD0BEF3DB165 //log(1/frcpa(1+ 138/256)
+data8 0x3FDBD21297781C2F //log(1/frcpa(1+ 139/256)
+data8 0x3FDC039236F08819 //log(1/frcpa(1+ 140/256)
+data8 0x3FDC28CB1E4D32FD //log(1/frcpa(1+ 141/256)
+data8 0x3FDC4E19B84723C2 //log(1/frcpa(1+ 142/256)
+data8 0x3FDC7FF9C74554C9 //log(1/frcpa(1+ 143/256)
+data8 0x3FDCA57B64E9DB05 //log(1/frcpa(1+ 144/256)
+data8 0x3FDCCB130A5CEBB0 //log(1/frcpa(1+ 145/256)
+data8 0x3FDCF0C0D18F326F //log(1/frcpa(1+ 146/256)
+data8 0x3FDD232075B5A201 //log(1/frcpa(1+ 147/256)
+data8 0x3FDD490246DEFA6B //log(1/frcpa(1+ 148/256)
+data8 0x3FDD6EFA918D25CD //log(1/frcpa(1+ 149/256)
+data8 0x3FDD9509707AE52F //log(1/frcpa(1+ 150/256)
+data8 0x3FDDBB2EFE92C554 //log(1/frcpa(1+ 151/256)
+data8 0x3FDDEE2F3445E4AF //log(1/frcpa(1+ 152/256)
+data8 0x3FDE148A1A2726CE //log(1/frcpa(1+ 153/256)
+data8 0x3FDE3AFC0A49FF40 //log(1/frcpa(1+ 154/256)
+data8 0x3FDE6185206D516E //log(1/frcpa(1+ 155/256)
+data8 0x3FDE882578823D52 //log(1/frcpa(1+ 156/256)
+data8 0x3FDEAEDD2EAC990C //log(1/frcpa(1+ 157/256)
+data8 0x3FDED5AC5F436BE3 //log(1/frcpa(1+ 158/256)
+data8 0x3FDEFC9326D16AB9 //log(1/frcpa(1+ 159/256)
+data8 0x3FDF2391A2157600 //log(1/frcpa(1+ 160/256)
+data8 0x3FDF4AA7EE03192D //log(1/frcpa(1+ 161/256)
+data8 0x3FDF71D627C30BB0 //log(1/frcpa(1+ 162/256)
+data8 0x3FDF991C6CB3B379 //log(1/frcpa(1+ 163/256)
+data8 0x3FDFC07ADA69A910 //log(1/frcpa(1+ 164/256)
+data8 0x3FDFE7F18EB03D3E //log(1/frcpa(1+ 165/256)
+data8 0x3FE007C053C5002E //log(1/frcpa(1+ 166/256)
+data8 0x3FE01B942198A5A1 //log(1/frcpa(1+ 167/256)
+data8 0x3FE02F74400C64EB //log(1/frcpa(1+ 168/256)
+data8 0x3FE04360BE7603AD //log(1/frcpa(1+ 169/256)
+data8 0x3FE05759AC47FE34 //log(1/frcpa(1+ 170/256)
+data8 0x3FE06B5F1911CF52 //log(1/frcpa(1+ 171/256)
+data8 0x3FE078BF0533C568 //log(1/frcpa(1+ 172/256)
+data8 0x3FE08CD9687E7B0E //log(1/frcpa(1+ 173/256)
+data8 0x3FE0A10074CF9019 //log(1/frcpa(1+ 174/256)
+data8 0x3FE0B5343A234477 //log(1/frcpa(1+ 175/256)
+data8 0x3FE0C974C89431CE //log(1/frcpa(1+ 176/256)
+data8 0x3FE0DDC2305B9886 //log(1/frcpa(1+ 177/256)
+data8 0x3FE0EB524BAFC918 //log(1/frcpa(1+ 178/256)
+data8 0x3FE0FFB54213A476 //log(1/frcpa(1+ 179/256)
+data8 0x3FE114253DA97D9F //log(1/frcpa(1+ 180/256)
+data8 0x3FE128A24F1D9AFF //log(1/frcpa(1+ 181/256)
+data8 0x3FE1365252BF0865 //log(1/frcpa(1+ 182/256)
+data8 0x3FE14AE558B4A92D //log(1/frcpa(1+ 183/256)
+data8 0x3FE15F85A19C765B //log(1/frcpa(1+ 184/256)
+data8 0x3FE16D4D38C119FA //log(1/frcpa(1+ 185/256)
+data8 0x3FE18203C20DD133 //log(1/frcpa(1+ 186/256)
+data8 0x3FE196C7BC4B1F3B //log(1/frcpa(1+ 187/256)
+data8 0x3FE1A4A738B7A33C //log(1/frcpa(1+ 188/256)
+data8 0x3FE1B981C0C9653D //log(1/frcpa(1+ 189/256)
+data8 0x3FE1CE69E8BB106B //log(1/frcpa(1+ 190/256)
+data8 0x3FE1DC619DE06944 //log(1/frcpa(1+ 191/256)
+data8 0x3FE1F160A2AD0DA4 //log(1/frcpa(1+ 192/256)
+data8 0x3FE2066D7740737E //log(1/frcpa(1+ 193/256)
+data8 0x3FE2147DBA47A394 //log(1/frcpa(1+ 194/256)
+data8 0x3FE229A1BC5EBAC3 //log(1/frcpa(1+ 195/256)
+data8 0x3FE237C1841A502E //log(1/frcpa(1+ 196/256)
+data8 0x3FE24CFCE6F80D9A //log(1/frcpa(1+ 197/256)
+data8 0x3FE25B2C55CD5762 //log(1/frcpa(1+ 198/256)
+data8 0x3FE2707F4D5F7C41 //log(1/frcpa(1+ 199/256)
+data8 0x3FE285E0842CA384 //log(1/frcpa(1+ 200/256)
+data8 0x3FE294294708B773 //log(1/frcpa(1+ 201/256)
+data8 0x3FE2A9A2670AFF0C //log(1/frcpa(1+ 202/256)
+data8 0x3FE2B7FB2C8D1CC1 //log(1/frcpa(1+ 203/256)
+data8 0x3FE2C65A6395F5F5 //log(1/frcpa(1+ 204/256)
+data8 0x3FE2DBF557B0DF43 //log(1/frcpa(1+ 205/256)
+data8 0x3FE2EA64C3F97655 //log(1/frcpa(1+ 206/256)
+data8 0x3FE3001823684D73 //log(1/frcpa(1+ 207/256)
+data8 0x3FE30E97E9A8B5CD //log(1/frcpa(1+ 208/256)
+data8 0x3FE32463EBDD34EA //log(1/frcpa(1+ 209/256)
+data8 0x3FE332F4314AD796 //log(1/frcpa(1+ 210/256)
+data8 0x3FE348D90E7464D0 //log(1/frcpa(1+ 211/256)
+data8 0x3FE35779F8C43D6E //log(1/frcpa(1+ 212/256)
+data8 0x3FE36621961A6A99 //log(1/frcpa(1+ 213/256)
+data8 0x3FE37C299F3C366A //log(1/frcpa(1+ 214/256)
+data8 0x3FE38AE2171976E7 //log(1/frcpa(1+ 215/256)
+data8 0x3FE399A157A603E7 //log(1/frcpa(1+ 216/256)
+data8 0x3FE3AFCCFE77B9D1 //log(1/frcpa(1+ 217/256)
+data8 0x3FE3BE9D503533B5 //log(1/frcpa(1+ 218/256)
+data8 0x3FE3CD7480B4A8A3 //log(1/frcpa(1+ 219/256)
+data8 0x3FE3E3C43918F76C //log(1/frcpa(1+ 220/256)
+data8 0x3FE3F2ACB27ED6C7 //log(1/frcpa(1+ 221/256)
+data8 0x3FE4019C2125CA93 //log(1/frcpa(1+ 222/256)
+data8 0x3FE4181061389722 //log(1/frcpa(1+ 223/256)
+data8 0x3FE42711518DF545 //log(1/frcpa(1+ 224/256)
+data8 0x3FE436194E12B6BF //log(1/frcpa(1+ 225/256)
+data8 0x3FE445285D68EA69 //log(1/frcpa(1+ 226/256)
+data8 0x3FE45BCC464C893A //log(1/frcpa(1+ 227/256)
+data8 0x3FE46AED21F117FC //log(1/frcpa(1+ 228/256)
+data8 0x3FE47A1527E8A2D3 //log(1/frcpa(1+ 229/256)
+data8 0x3FE489445EFFFCCC //log(1/frcpa(1+ 230/256)
+data8 0x3FE4A018BCB69835 //log(1/frcpa(1+ 231/256)
+data8 0x3FE4AF5A0C9D65D7 //log(1/frcpa(1+ 232/256)
+data8 0x3FE4BEA2A5BDBE87 //log(1/frcpa(1+ 233/256)
+data8 0x3FE4CDF28F10AC46 //log(1/frcpa(1+ 234/256)
+data8 0x3FE4DD49CF994058 //log(1/frcpa(1+ 235/256)
+data8 0x3FE4ECA86E64A684 //log(1/frcpa(1+ 236/256)
+data8 0x3FE503C43CD8EB68 //log(1/frcpa(1+ 237/256)
+data8 0x3FE513356667FC57 //log(1/frcpa(1+ 238/256)
+data8 0x3FE522AE0738A3D8 //log(1/frcpa(1+ 239/256)
+data8 0x3FE5322E26867857 //log(1/frcpa(1+ 240/256)
+data8 0x3FE541B5CB979809 //log(1/frcpa(1+ 241/256)
+data8 0x3FE55144FDBCBD62 //log(1/frcpa(1+ 242/256)
+data8 0x3FE560DBC45153C7 //log(1/frcpa(1+ 243/256)
+data8 0x3FE5707A26BB8C66 //log(1/frcpa(1+ 244/256)
+data8 0x3FE587F60ED5B900 //log(1/frcpa(1+ 245/256)
+data8 0x3FE597A7977C8F31 //log(1/frcpa(1+ 246/256)
+data8 0x3FE5A760D634BB8B //log(1/frcpa(1+ 247/256)
+data8 0x3FE5B721D295F10F //log(1/frcpa(1+ 248/256)
+data8 0x3FE5C6EA94431EF9 //log(1/frcpa(1+ 249/256)
+data8 0x3FE5D6BB22EA86F6 //log(1/frcpa(1+ 250/256)
+data8 0x3FE5E6938645D390 //log(1/frcpa(1+ 251/256)
+data8 0x3FE5F673C61A2ED2 //log(1/frcpa(1+ 252/256)
+data8 0x3FE6065BEA385926 //log(1/frcpa(1+ 253/256)
+data8 0x3FE6164BFA7CC06B //log(1/frcpa(1+ 254/256)
+data8 0x3FE62643FECF9743 //log(1/frcpa(1+ 255/256)
+LOCAL_OBJECT_END(log_table_3)
+
+
+.section .text
+GLOBAL_LIBM_ENTRY(acoshf)
+
+{ .mfi
+ getf.exp acosh_GR_f8 = f8
+ fclass.m p6,p0 = f8, 0xc3 // Test for x = NaN
+ mov log_GR_comp2 = 0x10032
+}
+{ .mfi
+ addl NR_table_address = @ltoff(log_table_1), gp
+ fms.s1 log_y = f8, f8, f1 // y = x^2-1
+ nop.i 0
+}
+;;
+
+{ .mfi
+ getf.sig acosh_GR_f8_sig = f8
+ fclass.m p11,p0 = f8, 0x21 // Test for x=+inf
+ mov log_GR_exp_17_ones = 0x1ffff
+}
+{ .mfi
+ ld8 NR_table_address = [NR_table_address]
+ fms.s1 log_w = f8,f1,f1 // w = x - 1
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fcmp.lt.s1 p7,p8 = f8, f1 // Test for x<1.0
+ addl log_GR_comp = 0x10020C,r0 // Upper 21 bits of signif of 1.0005
+}
+{ .mfb
+ mov log_GR_exp_16_ones = 0xffff //BIAS
+(p6) fma.s.s0 f8 = f8,f1,f0 // quietize nan result if x=nan
+(p6) br.ret.spnt b0 // Exit for x=nan
+}
+;;
+
+{ .mfb
+ //get second table address
+ adds log_table_address2 = 0x20, NR_table_address
+ fcmp.eq.s1 p10,p0 = f8, f1 // Test for x=+1.0
+(p11) br.ret.spnt b0 // Exit for x=+inf
+}
+;;
+
+{ .mfi
+ ldfpd NR1,NR2 = [log_table_address2],16
+ frsqrta.s1 log_y_rs,p0 = log_y // z=1/sqrt(y)
+ nop.i 0
+}
+{ .mfb
+ nop.m 0
+ fma.s1 log_arg = f8,f1,f8
+(p7) br.cond.spnt ACOSH_LESS_ONE // Branch if path 7, x < 1.0
+}
+;;
+
+{ .mfi
+ ldfe log_C2 = [log_table_address2],16
+(p8) fcmp.eq.s0 p6,p0 = f8, f0 // Dummy op sets denorm flag if unorm>=1.0
+ nop.i 0
+}
+{ .mfb
+(p8) cmp.le.unc p13,p0 = log_GR_comp2,acosh_GR_f8
+ nop.f 0
+(p13) br.cond.spnt LOG_COMMON1 // Branch if path 4, x >= 2^51
+}
+;;
+
+{ .mfi
+ ldfe log_C1 = [log_table_address2],16
+(p10) fmerge.s f8 = f0, f0 // Return 0 if x=1.0
+ shr.u acosh_GR_f8_sig = acosh_GR_f8_sig,43
+}
+{ .mib
+ cmp.eq p14,p0 = log_GR_exp_16_ones,acosh_GR_f8
+ nop.i 0
+(p10) br.ret.spnt b0 // Exit for x=1.0
+}
+;;
+
+{ .mfi
+ ldfe log_C0 = [log_table_address2],16
+ frsqrta.s1 acosh_w_rs,p0 = log_w // t=1/sqrt(w)
+ nop.i 0
+}
+{ .mfb
+(p14) cmp.lt.unc p15,p0 = acosh_GR_f8_sig,log_GR_comp
+ nop.f 0
+(p15) br.cond.spnt ACOSH_NEAR_ONE // Branch if path 2, 1.0 < x < 1.0005
+}
+;;
+
+// Here is main path, 1.0005 <= x < 2^51
+/////////////// The first iteration //////////////////////////////////
+{ .mfi
+ ldfpd log_P3,log_P2 = [NR_table_address],16
+ fma.s1 log_y_rs_iter = log_y_rs,log_y,f0 // y*z
+ nop.i 0
+}
+;;
+
+{ .mfi
+ ldfpd log_P1,log2 = [NR_table_address],16
+ fnma.s1 log_y_rs_iter2 = log_y_rs_iter,log_y_rs,NR2 // 3-(y*z)*z
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 log_y_rs_iter1 = log_y_rs,NR1,f0 // 0.5*z
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ // (0.5*z)*(3-(y*z)*z)
+ fma.s1 log_y_rs_iter = log_y_rs_iter1,log_y_rs_iter2,f0
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ // (0.5*z)*(3-(y*z)*z)
+ fma.s1 log_arg_early = log_y_rs_iter1,log_y_rs_iter2,f0
+ nop.i 0
+}
+;;
+
+/////////////////////////// The second iteration /////////////////////////////
+{ .mfi
+ nop.m 0
+ fma.s1 log_y_rs = log_y_rs_iter,log_y,f0
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 log_y_rs_iter1 = log_y_rs_iter,NR1,f0
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 log_arg_early = log_arg_early,log_y,f8
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fnma.s1 log_y_rs = log_y_rs,log_y_rs_iter,NR2
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 log_y_rs_iter1 = log_y_rs_iter1,log_y,f0
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ frcpa.s1 log_C,p0 = f1,log_arg_early
+ nop.i 0
+}
+;;
+
+{ .mfi
+ getf.exp log_GR_signexp_f8 = log_arg_early
+ nop.f 0
+ nop.i 0
+}
+;;
+
+{ .mfi
+ getf.sig log_GR_significand_f8 = log_arg_early
+ fma.s1 log_arg = log_y_rs_iter1,log_y_rs,f8 // (0.5*z)*(3-(y*z)*z)
+ adds log_table_address3 = 0x40, NR_table_address
+}
+;;
+
+///////////////////////////////// The end NR iterations /////////////////////
+
+{ .mmi
+ //significant bit destruction
+ and log_GR_exp_f8 = log_GR_signexp_f8, log_GR_exp_17_ones
+;;
+ //BIAS subtraction
+ sub log_GR_true_exp_f8 = log_GR_exp_f8, log_GR_exp_16_ones
+ nop.i 0
+}
+;;
+
+{ .mfi
+ setf.sig log_int_Nfloat = log_GR_true_exp_f8
+ fms.s1 log_r = log_C,log_arg,f1 // C = frcpa(x); r = C * x - 1
+ extr.u log_GR_index = log_GR_significand_f8,55,8 //Extract 8 bits
+}
+;;
+
+{ .mmi
+ //pre-index*8 + index
+ shladd log_table_address3 = log_GR_index,3,log_table_address3
+;;
+ ldfd log_T = [log_table_address3]
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 log_rsq = log_r, log_r, f0 //r^2
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 log_rp_p32 = log_P3, log_r, log_P2 //P3*r + P2
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 log_rp_p10 = log_P1, log_r, f1 //P1*r + 1.0
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ //convert N to the floating-point format log_Nfloat
+ fcvt.xf log_Nfloat = log_int_Nfloat
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ //(P3*r + P2)*r^2 + P1*r + 1.0
+ fma.s1 log_rp_p2 = log_rp_p32, log_rsq, log_rp_p10
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 log_T_plus_Nlog2 = log_Nfloat,log2,log_T //N*log2 + T
+ nop.i 0
+}
+;;
+
+{ .mfb
+ nop.m 0
+ fma.s.s0 f8 = log_rp_p2,log_r,log_T_plus_Nlog2
+ br.ret.sptk b0 // Exit main path, path 3: 1.0005 <= x < 2^51
+}
+;;
+
+// Here if path 2, 1.0 < x < 1.0005
+ACOSH_NEAR_ONE:
+// The first NR iteration
+{ .mfi
+ nop.m 0
+ fma.s1 acosh_w_iter1 = acosh_w_rs,log_w,f0 //t*w
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 acosh_w_1 = f8,log_C2,log_C1 //x*C2 + C1
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 acosh_w_iter2 = acosh_w_rs,NR1,f0 //t*0.5
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fnma.s1 acosh_w_iter1 = acosh_w_iter1,acosh_w_rs,NR2 //3-t*t*w
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ //(3-t*t*w)*t*0.5
+ fma.s1 acosh_w_iter2 = acosh_w_iter2,acosh_w_iter1,f0
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 acosh_w_1 = acosh_w_1,log_w,log_C0 //(x*C2 + C1)*(x-1) + C0
+ nop.i 0
+}
+;;
+
+// The second NR iteration
+{ .mfi
+ nop.m 0
+ fma.s1 acosh_w_rs = acosh_w_iter2,log_w,f0 //t*w
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fnma.s1 acosh_w_iter1 = acosh_w_iter2,acosh_w_rs,NR2
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 acosh_w_iter2 = acosh_w_iter2,NR1,f0
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 acosh_w_iter2 = acosh_w_iter2,acosh_w_iter1,f0
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 acosh_w_sqrt = acosh_w_iter2,log_w,f0
+ nop.i 0
+}
+;;
+
+{ .mfb
+ nop.m 0
+ fma.s.s0 f8 = acosh_w_1,acosh_w_sqrt,f0
+ br.ret.sptk b0 // Exit path 2, 1.0 < x < 1.0005
+}
+;;
+
+// Here if path 4, x >= 2^51
+LOG_COMMON1:
+{ .mfi
+ ldfpd log_P3,log_P2 = [NR_table_address],16
+ frcpa.s1 log_C,p0 = f1,log_arg
+ nop.i 0
+}
+;;
+
+{ .mmi
+ getf.exp log_GR_signexp_f8 = log_arg
+ ldfpd log_P1,log2 = [NR_table_address],16
+ nop.i 0
+}
+;;
+
+{ .mmi
+ getf.sig log_GR_significand_f8 = log_arg
+ nop.m 0
+ nop.i 0
+}
+;;
+
+{ .mfi
+ adds log_table_address3 = 0x40, NR_table_address
+ nop.f 0
+ //significant bit destruction
+ and log_GR_exp_f8 = log_GR_signexp_f8, log_GR_exp_17_ones
+}
+;;
+
+{ .mmf
+ nop.m 0
+ //BIAS subtraction
+ sub log_GR_true_exp_f8 = log_GR_exp_f8, log_GR_exp_16_ones
+ fms.s1 log_r = log_C,log_arg,f1 // C = frcpa(x); r = C * x - 1
+}
+;;
+
+{ .mfi
+ setf.sig log_int_Nfloat = log_GR_true_exp_f8
+ nop.f 0
+ extr.u log_GR_index = log_GR_significand_f8,55,8 //Extract 8 bits
+}
+;;
+
+{ .mmi
+ //pre-index*8 + index
+ shladd log_table_address3 = log_GR_index,3,log_table_address3
+;;
+ ldfd log_T = [log_table_address3]
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 log_rsq = log_r, log_r, f0 //r^2
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 log_rp_p32 = log_P3, log_r, log_P2 //P3*r + P2
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 log_rp_p10 = log_P1, log_r, f1 //P1*r + 1.0
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ //convert N to the floating-point format log_Nfloat
+ fcvt.xf log_Nfloat = log_int_Nfloat
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ fma.s1 log_rp_p2 = log_rp_p32, log_rsq, log_rp_p10
+ nop.i 0
+}
+;;
+
+{ .mfi
+ nop.m 0
+ fma.s1 log_T_plus_Nlog2 = log_Nfloat,log2,log_T //N*log2 + T
+ nop.i 0
+}
+;;
+
+{ .mfb
+ nop.m 0
+ fma.s.s0 f8 = log_rp_p2,log_r,log_T_plus_Nlog2
+ br.ret.sptk b0 // Exit path 4, x >= 2^51
+}
+;;
+
+// Here if path 7, x < 1.0
+ACOSH_LESS_ONE:
+{ .mfi
+ alloc r32 = ar.pfs,1,3,4,0
+ fmerge.s f10 = f8,f8
+ nop.i 0
+}
+;;
+
+{ .mfb
+ mov acosh_GR_tag = 137
+ frcpa.s0 f8,p0 = f0,f0
+ br.cond.sptk __libm_error_region
+}
+;;
+
+GLOBAL_LIBM_END(acoshf)
+
+LOCAL_LIBM_ENTRY(__libm_error_region)
+.prologue
+
+{ .mfi
+ add GR_Parameter_Y=-32,sp // Parameter 2 value
+ nop.f 0
+.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
+{ .mib
+ stfs [GR_Parameter_X] = f10 // STORE Parameter 1 on stack
+ add GR_Parameter_RESULT = 0,GR_Parameter_Y // Parameter 3 address
+ nop.b 0
+}
+{ .mib
+ stfs [GR_Parameter_Y] = f8 // STORE Parameter 3 on stack
+ add GR_Parameter_Y = -16,GR_Parameter_Y
+ br.call.sptk b0=__libm_error_support# // Call error handling function
+};;
+
+{ .mmi
+ add GR_Parameter_RESULT = 48,sp
+ nop.m 0
+ nop.i 0
+};;
+
+{ .mmi
+ ldfs f8 = [GR_Parameter_RESULT] // 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
+};;
+
+LOCAL_LIBM_END(__libm_error_region)
+
+
+.type __libm_error_support#,@function
+.global __libm_error_support#