19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29         .file   "nextafter.S"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(nextafter,function)
  33         .weak _nextafter
  34         .type _nextafter,#function
  35 _nextafter      = __nextafter
  36 #include "libm_synonyms.h"
  37 #include "libm_protos.h"
  38 
  39 #if defined(LIBM_BUILD) && !defined(ELFOBJ)
  40 #define mENTRY(x)       ENTRY(__libm/**/x)
  41 #define mNAME(x)        NAME(__libm/**/x)
  42 #else
  43 #define mENTRY(x)       ENTRY(x)
  44 #define mNAME(x)        NAME(x)
  45 #endif
  46 
  47         RO_DATA
  48         .align  8
  49 .Lconstant:
  50 two54   = 0x00
  51         .word   0x43500000,0x0          !  2**54
  52 twom54  = 0x08
  53         .word   0x3c900000,0x0          !  2**-54
  54 tiny    = 0x10
  55         .word   0x00100000,0x0          !  tiny
  56 
  57 ! variable using fp
  58 x       = -0x8
  59 y       = -0x10
  60 
  61         ENTRY(nextafter)
  62         save    %sp,-128,%sp
  63         PIC_SETUP(l7)
  64         std     %i0,[%fp+x]
  65         or      %g0,%i0,%o0             ! save original arguments
  66         or      %g0,%i1,%o1

  93         nop
  94 2:
  95         fbl     3f                      ! next_addulp
  96         nop
  97 1:                                      ! next_subulp
  98         subcc   %i1,1,%i1
  99         ba      4f                      ! next_final
 100         subx    %i0,0,%i0
 101 3:                                      ! next_addulp
 102         addcc   %i1,1,%i1
 103         addx    %i0,0,%i0
 104 4:                                      ! next_final
 105         sethi   %hi(0x7ff00000),%l3
 106         std     %i0,[%fp+x]
 107         andcc   %i0,%l3,%i2
 108         be,a    1f                      ! xflow
 109         ldd     [%l0+tiny],%f2
 110         cmp     %i2,%l3
 111         bne,a   9f                      ! next_return
 112         ldd     [%fp+x],%f0
 113         call    mNAME(_SVID_libm_err)   ! overflow
 114         or      %g0,46,%o4
 115         ba      9f
 116         nop
 117 1:                                      ! xflow
 118         fmuld   %f2,%f2,%f2
 119         ldd     [%fp+x],%f0
 120 9:                                      ! next_return
 121         ret
 122         restore
 123 
 124         SET_SIZE(nextafter)

  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29         .file   "nextafter.S"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(nextafter,function)
  33         .weak _nextafter
  34         .type _nextafter,#function
  35 _nextafter      = __nextafter
  36 #include "libm_synonyms.h"
  37 #include "libm_protos.h"
  38 








  39         RO_DATA
  40         .align  8
  41 .Lconstant:
  42 two54   = 0x00
  43         .word   0x43500000,0x0          !  2**54
  44 twom54  = 0x08
  45         .word   0x3c900000,0x0          !  2**-54
  46 tiny    = 0x10
  47         .word   0x00100000,0x0          !  tiny
  48 
  49 ! variable using fp
  50 x       = -0x8
  51 y       = -0x10
  52 
  53         ENTRY(nextafter)
  54         save    %sp,-128,%sp
  55         PIC_SETUP(l7)
  56         std     %i0,[%fp+x]
  57         or      %g0,%i0,%o0             ! save original arguments
  58         or      %g0,%i1,%o1

  85         nop
  86 2:
  87         fbl     3f                      ! next_addulp
  88         nop
  89 1:                                      ! next_subulp
  90         subcc   %i1,1,%i1
  91         ba      4f                      ! next_final
  92         subx    %i0,0,%i0
  93 3:                                      ! next_addulp
  94         addcc   %i1,1,%i1
  95         addx    %i0,0,%i0
  96 4:                                      ! next_final
  97         sethi   %hi(0x7ff00000),%l3
  98         std     %i0,[%fp+x]
  99         andcc   %i0,%l3,%i2
 100         be,a    1f                      ! xflow
 101         ldd     [%l0+tiny],%f2
 102         cmp     %i2,%l3
 103         bne,a   9f                      ! next_return
 104         ldd     [%fp+x],%f0
 105         call    NAME(_SVID_libm_err)    ! overflow
 106         or      %g0,46,%o4
 107         ba      9f
 108         nop
 109 1:                                      ! xflow
 110         fmuld   %f2,%f2,%f2
 111         ldd     [%fp+x],%f0
 112 9:                                      ! next_return
 113         ret
 114         restore
 115 
 116         SET_SIZE(nextafter)