/* * 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 "ilogbl.c" .text ..TXTST0: # -- Begin ilogbl .text .align 16,0x90 .globl ilogbl ilogbl: # parameter 1: 8 + %ebp ..B1.1: ..L1: pushl %ebp movl %esp, %ebp andl $-16, %esp subl $32, %esp ..B1.2: fnstcw 14(%esp) ..B1.3: movzwl 16(%ebp), %eax andl $32767, %eax call ..L2 ..L2: popl %edx lea _GLOBAL_OFFSET_TABLE_+[. - ..L2](%edx), %edx cmpl $32767, %eax je ..B1.20 ..B1.4: testl %eax, %eax jne ..B1.13 ..B1.5: cmpl $0, 12(%ebp) jne ..B1.7 ..B1.6: cmpl $0, 8(%ebp) je ..B1.14 ..B1.7: movzwl 14(%esp), %ecx movl %ecx, %eax andl $768, %eax cmpl $768, %eax je ..B1.19 ..B1.8: orl $-64768, %ecx movw %cx, 12(%esp) ..B1.9: fldcw 12(%esp) ..B1.10: fldt 8(%ebp) fmull _TWO_75@GOTOFF(%edx) fstpt 8(%ebp) ..B1.11: fldcw 14(%esp) ..B1.12: movzwl 16(%ebp), %eax andl $32767, %eax addl $-16458, %eax movl %ebp, %esp popl %ebp ret ..B1.13: addl $-16383, %eax movl %ebp, %esp popl %ebp ret ..B1.14: movzwl 14(%esp), %ecx movl %ecx, %eax andl $768, %eax cmpl $768, %eax je ..B1.18 ..B1.15: orl $-64768, %ecx movw %cx, 12(%esp) ..B1.16: fldcw 12(%esp) ..B1.17: fldcw 14(%esp) ..B1.18: fldl _infs@GOTOFF(%edx) movl $-2147483648, %eax fmull _zeros@GOTOFF(%edx) fstpl 16(%esp) movl %ebp, %esp popl %ebp ret ..B1.19: fldt 8(%ebp) fmull _TWO_75@GOTOFF(%edx) fstpt 8(%ebp) jmp ..B1.12 ..B1.20: cmpl $-2147483648, 12(%ebp) fldl _infs@GOTOFF(%edx) fmull _zeros@GOTOFF(%edx) fstpl 16(%esp) jne ..B1.23 ..B1.21: cmpl $0, 8(%ebp) jne ..B1.23 ..B1.22: movl $2147483647, %eax movl %ebp, %esp popl %ebp ret ..B1.23: movzwl 14(%esp), %edx movl %edx, %eax andl $768, %eax cmpl $768, %eax je ..B1.29 ..B1.24: orl $-64768, %edx movw %dx, 12(%esp) ..B1.25: fldcw 12(%esp) ..B1.26: fldt 8(%ebp) fstpt (%esp) ..B1.27: fldcw 14(%esp) ..B1.28: movl $-2147483648, %eax movl %ebp, %esp popl %ebp ret ..B1.29: fldt 8(%ebp) fstpt (%esp) jmp ..B1.28 .align 16,0x90 .type ilogbl,@function .size ilogbl,.-ilogbl .data # -- End ilogbl .section .rodata, "a" .align 4 .align 4 _TWO_75: .long 0 .long 1151336448 .long 0 .long 994050048 .type _TWO_75,@object .size _TWO_75,16 .align 4 _infs: .long 0 .long 2146435072 .long 0 .long 4293918720 .type _infs,@object .size _infs,16 .align 4 _zeros: .long 0 .long 0 .long 0 .long 2147483648 .type _zeros,@object .size _zeros,16 .data .section .note.GNU-stack, "" # End