13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29         .file "acosf.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(acosf,function)
  33 #include "libm_synonyms.h"
  34 #include "libm_protos.h"
  35 
  36 #undef fabs
  37 
  38         ENTRY(acosf)
  39         flds    4(%esp)                 / push x
  40         fld1                            / push 1
  41         fld     %st(1)                  / x , 1 , x
  42         fabs                            / |x| , 1 , x
  43         fucomp
  44         fstsw   %ax
  45         sahf
  46         ja      .ERR
  47         fadd    %st(1),%st              / 1+x,x
  48         fldz
  49         fucomp  
  50         fstsw   %ax
  51         sahf
  52         jp      .L1
  53         jne     .L1
  54         / x is -1 
  55         fstp    %st(0)                  / x
  56         fstp    %st(0)                  / empty NPX stack
  57         fldpi

  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  23  */
  24 /*
  25  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29         .file "acosf.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(acosf,function)

  33 #include "libm_protos.h"
  34 


  35         ENTRY(acosf)
  36         flds    4(%esp)                 / push x
  37         fld1                            / push 1
  38         fld     %st(1)                  / x , 1 , x
  39         fabs                            / |x| , 1 , x
  40         fucomp
  41         fstsw   %ax
  42         sahf
  43         ja      .ERR
  44         fadd    %st(1),%st              / 1+x,x
  45         fldz
  46         fucomp  
  47         fstsw   %ax
  48         sahf
  49         jp      .L1
  50         jne     .L1
  51         / x is -1 
  52         fstp    %st(0)                  / x
  53         fstp    %st(0)                  / empty NPX stack
  54         fldpi