frexpf.S 3.4 KB

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  1. /*
  2. * Math library
  3. *
  4. * Copyright (C) 2016 Intel Corporation. All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without
  7. * modification, are permitted provided that the following conditions
  8. * are met:
  9. *
  10. * * Redistributions of source code must retain the above copyright
  11. * notice, this list of conditions and the following disclaimer.
  12. * * Redistributions in binary form must reproduce the above copyright
  13. * notice, this list of conditions and the following disclaimer in
  14. * the documentation and/or other materials provided with the
  15. * distribution.
  16. * * Neither the name of Intel Corporation nor the names of its
  17. * contributors may be used to endorse or promote products derived
  18. * from this software without specific prior written permission.
  19. *
  20. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31. *
  32. *
  33. * Author Name <jingwei.zhang@intel.com>
  34. * History:
  35. * 03-14-2016 Initial version. numerics svn rev. 12864
  36. */
  37. .file "frexpf.c"
  38. .text
  39. ..TXTST0:
  40. # -- Begin frexpf
  41. .text
  42. .align 16,0x90
  43. .globl frexpf
  44. frexpf:
  45. # parameter 1: 8 + %esp
  46. # parameter 2: 12 + %esp
  47. ..B1.1:
  48. ..L1:
  49. pushl %edi
  50. movl 8(%esp), %ecx
  51. movl %ecx, %edx
  52. andl $2147483647, %edx
  53. movl 12(%esp), %eax
  54. lea -8388608(%edx), %edi
  55. cmpl $2130706432, %edi
  56. jb ..B1.5
  57. ..B1.2:
  58. decl %edx
  59. cmpl $2139095039, %edx
  60. jae ..B1.6
  61. ..B1.3:
  62. flds 8(%esp)
  63. call ..L2
  64. ..L2:
  65. popl %edx
  66. lea _GLOBAL_OFFSET_TABLE_+[. - ..L2](%edx), %edx
  67. fmuls .L_2il0floatpacket.0@GOTOFF(%edx)
  68. fstps 8(%esp)
  69. movl 8(%esp), %ecx
  70. movl %ecx, %edi
  71. andl $2147483647, %edi
  72. andl $-2139095041, %ecx
  73. shrl $23, %edi
  74. orl $1056964608, %ecx
  75. movl %ecx, 8(%esp)
  76. addl $-151, %edi
  77. flds 8(%esp)
  78. movl %edi, (%eax)
  79. ..B1.4:
  80. popl %edi
  81. ret
  82. ..B1.5:
  83. andl $-2139095041, %ecx
  84. shrl $23, %edi
  85. orl $1056964608, %ecx
  86. movl %ecx, 8(%esp)
  87. addl $-125, %edi
  88. flds 8(%esp)
  89. movl %edi, (%eax)
  90. popl %edi
  91. ret
  92. ..B1.6:
  93. flds 8(%esp)
  94. movl $0, (%eax)
  95. popl %edi
  96. ret
  97. .align 16,0x90
  98. .type frexpf,@function
  99. .size frexpf,.-frexpf
  100. .data
  101. # -- End frexpf
  102. .section .rodata, "a"
  103. .align 4
  104. .align 4
  105. .L_2il0floatpacket.0:
  106. .long 0x4c000000
  107. .type .L_2il0floatpacket.0,@object
  108. .size .L_2il0floatpacket.0,4
  109. .data
  110. .section .note.GNU-stack, ""
  111. # End