/* * Math library * * Copyright (C) 2016 Intel Corporation. All rights reserved. * * 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. * * Neither the name of Intel Corporation nor the names of its * contributors may 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 THE COPYRIGHT * OWNER OR 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. * * * Author Name * History: * 03-14-2016 Initial version. numerics svn rev. 12864 */ .file "logb_gen.c" .text ..TXTST0: # -- Begin logb .text .align 16,0x90 .globl logb logb: # parameter 1: %xmm0 ..B1.1: .cfi_startproc ..___tag_value_logb.1: ..L2: movsd %xmm0, -8(%rsp) movl -4(%rsp), %eax movl %eax, %edx andl $2147483647, %edx lea -1048576(%rdx), %ecx cmpl $2145386496, %ecx jb ..B1.7 ..B1.2: testl %ecx, %ecx jge ..B1.6 ..B1.3: movl -8(%rsp), %eax orl %eax, %edx je ..B1.8 ..B1.4: lea _TWO_55(%rip), %rax movsd -8(%rsp), %xmm0 mulsd (%rax), %xmm0 movsd %xmm0, -8(%rsp) pxor %xmm0, %xmm0 movl -4(%rsp), %edx andl $2147483647, %edx shrl $20, %edx addl $-1078, %edx cvtsi2sd %edx, %xmm0 ..B1.5: ret ..B1.6: lea _ones(%rip), %rdx shrl $31, %eax movsd (%rdx,%rax,8), %xmm1 mulsd %xmm1, %xmm0 ret ..B1.7: shrl $20, %ecx pxor %xmm0, %xmm0 addl $-1022, %ecx cvtsi2sd %ecx, %xmm0 ret ..B1.8: lea 8+_ones(%rip), %rax lea _zeros(%rip), %rdx movsd (%rax), %xmm0 divsd (%rdx), %xmm0 ret .align 16,0x90 .cfi_endproc .type logb,@function .size logb,.-logb .data # -- End logb .section .rodata, "a" .align 4 .align 4 _TWO_55: .long 0 .long 1130364928 .type _TWO_55,@object .size _TWO_55,8 .align 4 _ones: .long 0 .long 1072693248 .long 0 .long 3220176896 .type _ones,@object .size _ones,16 .align 4 _zeros: .long 0 .long 0 .long 0 .long 2147483648 .type _zeros,@object .size _zeros,16 .data .section .note.GNU-stack, "" // -- Begin DWARF2 SEGMENT .eh_frame .section .eh_frame,"a",@progbits .eh_frame_seg: .align 1 # End