/* * 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 "ilogbf.c" .text ..TXTST0: # -- Begin ilogbf .text .align 16,0x90 .globl ilogbf ilogbf: # parameter 1: 16 + %esp ..B1.1: ..L1: subl $12, %esp movl 16(%esp), %eax andl $2147483647, %eax addl $-8388608, %eax cmpl $2130706432, %eax jb ..B1.6 ..B1.2: call ..L2 ..L2: popl %edx lea _GLOBAL_OFFSET_TABLE_+[. - ..L2](%edx), %edx testl %eax, %eax jl ..B1.7 ..B1.3: fldz cmpl $2130706432, %eax fmuls .L_2il0floatpacket.0@GOTOFF(%edx) fstps (%esp) je ..B1.5 ..B1.4: flds 16(%esp) movl $-2147483648, %eax fmul %st(0), %st fstps 16(%esp) movl 16(%esp), %edx andl $2147483647, %edx cmpl $2139095040, %edx jae ..L3 movl $0, %eax ..L3: addl $12, %esp ret ..B1.5: movl $2147483647, %eax addl $12, %esp ret ..B1.6: shrl $23, %eax addl $-126, %eax addl $12, %esp ret ..B1.7: cmpl $-8388608, %eax je ..B1.9 ..B1.8: flds 16(%esp) fmuls .L_2il0floatpacket.1@GOTOFF(%edx) fstps 16(%esp) movl 16(%esp), %eax andl $2147483647, %eax shrl $23, %eax addl $-152, %eax addl $12, %esp ret ..B1.9: fldz movl $-2147483648, %eax fmuls .L_2il0floatpacket.0@GOTOFF(%edx) fstps (%esp) addl $12, %esp ret .align 16,0x90 .type ilogbf,@function .size ilogbf,.-ilogbf .data # -- End ilogbf .section .rodata, "a" .align 4 .align 4 .L_2il0floatpacket.0: .long 0x7f800000 .type .L_2il0floatpacket.0,@object .size .L_2il0floatpacket.0,4 .align 4 .L_2il0floatpacket.1: .long 0x4c000000 .type .L_2il0floatpacket.1,@object .size .L_2il0floatpacket.1,4 .data .section .note.GNU-stack, "" # End