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 2006 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29         .file   "asinl.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(asinl,function)
  33 #include "libm_synonyms.h"
  34 
  35 #undef fabs
  36 
  37         ENTRY(asinl)
  38         fldt    4(%esp)                 / push x
  39         fld1                            / push 1
  40         fld     %st(1)                  / x , 1 , x
  41         fabs                            / |x| , 1 , x
  42         fucomp
  43         fstsw   %ax
  44         sahf
  45         ja      9f
  46         fadd    %st(1),%st              / 1+x,x
  47         fld1                            / 1,1+x,x
  48         fsub    %st(2),%st              / 1-x,1+x,x
  49         fmulp   %st,%st(1)              / (1-x)*(1+x),x
  50         fsqrt                           / sqrt((1-x)*(1+x)),x
  51         fpatan                          / atan(x/sqrt((1-x)*(1+x)))
  52         ret
  53 9:
  54         / |x| > 1
  55         fstp    %st(0)                  / x

  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 2006 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28 
  29         .file   "asinl.s"
  30 
  31 #include "libm.h"
  32 LIBM_ANSI_PRAGMA_WEAK(asinl,function)



  33 
  34         ENTRY(asinl)
  35         fldt    4(%esp)                 / push x
  36         fld1                            / push 1
  37         fld     %st(1)                  / x , 1 , x
  38         fabs                            / |x| , 1 , x
  39         fucomp
  40         fstsw   %ax
  41         sahf
  42         ja      9f
  43         fadd    %st(1),%st              / 1+x,x
  44         fld1                            / 1,1+x,x
  45         fsub    %st(2),%st              / 1-x,1+x,x
  46         fmulp   %st,%st(1)              / (1-x)*(1+x),x
  47         fsqrt                           / sqrt((1-x)*(1+x)),x
  48         fpatan                          / atan(x/sqrt((1-x)*(1+x)))
  49         ret
  50 9:
  51         / |x| > 1
  52         fstp    %st(0)                  / x