/* Function logf vectorized with AVX2.

   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(_ZGVdN8v_logf_avx2)

/*

   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      $448, %rsp

        movq      __svml_slog_data@GOTPCREL(%rip), %rax

        vmovaps   %ymm0, %ymm2

        vmovups _iBrkValue(%rax), %ymm6

        vmovups _iLoRange(%rax), %ymm1

/* check for working range,

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

        vpaddd _iHiDelta(%rax), %ymm2, %ymm7

/* reduction: compute r,n */

        vpsubd    %ymm6, %ymm2, %ymm4

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

        vpsrad    $23, %ymm4, %ymm3

        vpand _iOffExpoMask(%rax), %ymm4, %ymm5

        vmovups _sPoly_7(%rax), %ymm4

        vcvtdq2ps %ymm3, %ymm0

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

        vpaddd    %ymm6, %ymm5, %ymm3

/* reduced argument R */

        vsubps _sOne(%rax), %ymm3, %ymm5

/* polynomial evaluation starts here */

        vfmadd213ps _sPoly_6(%rax), %ymm5, %ymm4

        vfmadd213ps _sPoly_5(%rax), %ymm5, %ymm4

        vfmadd213ps _sPoly_4(%rax), %ymm5, %ymm4

        vfmadd213ps _sPoly_3(%rax), %ymm5, %ymm4

        vfmadd213ps _sPoly_2(%rax), %ymm5, %ymm4

        vfmadd213ps _sPoly_1(%rax), %ymm5, %ymm4

        vmulps    %ymm5, %ymm4, %ymm6

/* polynomial evaluation end */

        vfmadd213ps %ymm5, %ymm5, %ymm6

        vpcmpgtd  %ymm7, %ymm1, %ymm1

        vmovmskps %ymm1, %ecx

/* final reconstruction:

   add exponent_value*log2 to polynomial result */

        vfmadd132ps _sLn2(%rax), %ymm6, %ymm0

        testl     %ecx, %ecx

        jne       .LBL_1_3

.LBL_1_2:

        cfi_remember_state

        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

        vmovups   %ymm2, 320(%rsp)

        vmovups   %ymm0, 384(%rsp)

        je        .LBL_1_2

        xorb      %dl, %dl

        xorl      %eax, %eax

        vmovups   %ymm8, 224(%rsp)

        vmovups   %ymm9, 192(%rsp)

        vmovups   %ymm10, 160(%rsp)

        vmovups   %ymm11, 128(%rsp)

        vmovups   %ymm12, 96(%rsp)

        vmovups   %ymm13, 64(%rsp)

        vmovups   %ymm14, 32(%rsp)

        vmovups   %ymm15, (%rsp)

        movq      %rsi, 264(%rsp)

        movq      %rdi, 256(%rsp)

        movq      %r12, 296(%rsp)

        cfi_offset_rel_rsp (12, 296)

        movb      %dl, %r12b

        movq      %r13, 288(%rsp)

        cfi_offset_rel_rsp (13, 288)

        movl      %ecx, %r13d

        movq      %r14, 280(%rsp)

        cfi_offset_rel_rsp (14, 280)

        movl      %eax, %r14d

        movq      %r15, 272(%rsp)

        cfi_offset_rel_rsp (15, 272)

        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

        vmovups   224(%rsp), %ymm8

        vmovups   192(%rsp), %ymm9

        vmovups   160(%rsp), %ymm10

        vmovups   128(%rsp), %ymm11

        vmovups   96(%rsp), %ymm12

        vmovups   64(%rsp), %ymm13

        vmovups   32(%rsp), %ymm14

        vmovups   (%rsp), %ymm15

        vmovups   384(%rsp), %ymm0

        movq      264(%rsp), %rsi

        movq      256(%rsp), %rdi

        movq      296(%rsp), %r12

        cfi_restore (%r12)

        movq      288(%rsp), %r13

        cfi_restore (%r13)

        movq      280(%rsp), %r14

        cfi_restore (%r14)

        movq      272(%rsp), %r15

        cfi_restore (%r15)

        jmp       .LBL_1_2

.LBL_1_10:

        cfi_restore_state

        movzbl    %r12b, %r15d

        vmovss    324(%rsp,%r15,8), %xmm0

        vzeroupper

        call      JUMPTARGET(__logf_finite)

        vmovss    %xmm0, 388(%rsp,%r15,8)

        jmp       .LBL_1_8

.LBL_1_12:

        movzbl    %r12b, %r15d

        vmovss    320(%rsp,%r15,8), %xmm0

        vzeroupper

        call      JUMPTARGET(__logf_finite)

        vmovss    %xmm0, 384(%rsp,%r15,8)

        jmp       .LBL_1_7

END(_ZGVdN8v_logf_avx2)