/* Function logf vectorized with SSE4.

   Copyright (C) 2014-2018 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 <sysdep.h>

#include "svml_s_logf_data.h"

	.text

ENTRY (_ZGVbN4v_logf_sse4)

/*

   ALGORITHM DESCRIPTION:

     log(x) = exponent_x*log(2) + log(mantissa_x),         if mantissa_x<4/3

     log(x) = (exponent_x+1)*log(2) + log(0.5*mantissa_x), if mantissa_x>4/3

     R = mantissa_x - 1,     if mantissa_x<4/3

     R = 0.5*mantissa_x - 1, if mantissa_x>4/3

     |R|< 1/3

     log(1+R) is approximated as a polynomial: degree 9 for 1-ulp,

     degree 7 for 4-ulp, degree 3 for half-precision.  */

        pushq     %rbp

        cfi_adjust_cfa_offset (8)

        cfi_rel_offset (%rbp, 0)

        movq      %rsp, %rbp

        cfi_def_cfa_register (%rbp)

        andq      $-64, %rsp

        subq      $320, %rsp

/* reduction: compute r,n */

        movaps    %xmm0, %xmm2

/* check for working range,

   set special argument mask (denormals/zero/Inf/NaN) */

        movq      __svml_slog_data@GOTPCREL(%rip), %rax

        movdqu _iHiDelta(%rax), %xmm1

        movdqu _iLoRange(%rax), %xmm4

        paddd     %xmm0, %xmm1

        movdqu _iBrkValue(%rax), %xmm3

        pcmpgtd   %xmm1, %xmm4

        movdqu _iOffExpoMask(%rax), %xmm1

        psubd     %xmm3, %xmm2

        pand      %xmm2, %xmm1

/* exponent_x (mantissa_x<4/3) or exponent_x+1 (mantissa_x>4/3) */

        psrad     $23, %xmm2

        paddd     %xmm3, %xmm1

        movups _sPoly_7(%rax), %xmm5

/* mantissa_x (mantissa_x<4/3), or 0.5*mantissa_x (mantissa_x>4/3) */

        cvtdq2ps  %xmm2, %xmm6

/* reduced argument R */

        subps _sOne(%rax), %xmm1

        movmskps  %xmm4, %ecx

/* final reconstruction:

   add exponent_value*log2 to polynomial result */

        mulps _sLn2(%rax), %xmm6

/* polynomial evaluation starts here */

        mulps     %xmm1, %xmm5

        addps _sPoly_6(%rax), %xmm5

        mulps     %xmm1, %xmm5

        addps _sPoly_5(%rax), %xmm5

        mulps     %xmm1, %xmm5

        addps _sPoly_4(%rax), %xmm5

        mulps     %xmm1, %xmm5

        addps _sPoly_3(%rax), %xmm5

        mulps     %xmm1, %xmm5

        addps _sPoly_2(%rax), %xmm5

        mulps     %xmm1, %xmm5

        addps _sPoly_1(%rax), %xmm5

        mulps     %xmm1, %xmm5

/* polynomial evaluation end */

        mulps     %xmm1, %xmm5

        addps     %xmm5, %xmm1

        addps     %xmm6, %xmm1

        testl     %ecx, %ecx

        jne       .LBL_1_3

.LBL_1_2:

        cfi_remember_state

        movdqa    %xmm1, %xmm0

        movq      %rbp, %rsp

        cfi_def_cfa_register (%rsp)

        popq      %rbp

        cfi_adjust_cfa_offset (-8)

        cfi_restore (%rbp)

        ret

.LBL_1_3:

        cfi_restore_state

        movups    %xmm0, 192(%rsp)

        movups    %xmm1, 256(%rsp)

        je        .LBL_1_2

        xorb      %dl, %dl

        xorl      %eax, %eax

        movups    %xmm8, 112(%rsp)

        movups    %xmm9, 96(%rsp)

        movups    %xmm10, 80(%rsp)

        movups    %xmm11, 64(%rsp)

        movups    %xmm12, 48(%rsp)

        movups    %xmm13, 32(%rsp)

        movups    %xmm14, 16(%rsp)

        movups    %xmm15, (%rsp)

        movq      %rsi, 136(%rsp)

        movq      %rdi, 128(%rsp)

        movq      %r12, 168(%rsp)

        cfi_offset_rel_rsp (12, 168)

        movb      %dl, %r12b

        movq      %r13, 160(%rsp)

        cfi_offset_rel_rsp (13, 160)

        movl      %ecx, %r13d

        movq      %r14, 152(%rsp)

        cfi_offset_rel_rsp (14, 152)

        movl      %eax, %r14d

        movq      %r15, 144(%rsp)

        cfi_offset_rel_rsp (15, 144)

        cfi_remember_state

.LBL_1_6:

        btl       %r14d, %r13d

        jc        .LBL_1_12

.LBL_1_7:

        lea       1(%r14), %esi

        btl       %esi, %r13d

        jc        .LBL_1_10

.LBL_1_8:

        incb      %r12b

        addl      $2, %r14d

        cmpb      $16, %r12b

        jb        .LBL_1_6

        movups    112(%rsp), %xmm8

        movups    96(%rsp), %xmm9

        movups    80(%rsp), %xmm10

        movups    64(%rsp), %xmm11

        movups    48(%rsp), %xmm12

        movups    32(%rsp), %xmm13

        movups    16(%rsp), %xmm14

        movups    (%rsp), %xmm15

        movq      136(%rsp), %rsi

        movq      128(%rsp), %rdi

        movq      168(%rsp), %r12

        cfi_restore (%r12)

        movq      160(%rsp), %r13

        cfi_restore (%r13)

        movq      152(%rsp), %r14

        cfi_restore (%r14)

        movq      144(%rsp), %r15

        cfi_restore (%r15)

        movups    256(%rsp), %xmm1

        jmp       .LBL_1_2

.LBL_1_10:

        cfi_restore_state

        movzbl    %r12b, %r15d

        movss     196(%rsp,%r15,8), %xmm0

        call      JUMPTARGET(__logf_finite)

        movss     %xmm0, 260(%rsp,%r15,8)

        jmp       .LBL_1_8

.LBL_1_12:

        movzbl    %r12b, %r15d

        movss     192(%rsp,%r15,8), %xmm0

        call      JUMPTARGET(__logf_finite)

        movss     %xmm0, 256(%rsp,%r15,8)

        jmp       .LBL_1_7

END (_ZGVbN4v_logf_sse4)