1 /* ieee-utils/fp-hpux11.c
3 * Copyright (C) 2001, 2007 Brian Gough
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 #include <gsl/gsl_ieee_utils.h>
24 #include <gsl/gsl_errno.h>
27 gsl_ieee_set_mode (int precision, int rounding, int exception_mask)
33 case GSL_IEEE_SINGLE_PRECISION:
34 GSL_ERROR ("HPUX PA-RISC only supports default precision rounding",
37 case GSL_IEEE_DOUBLE_PRECISION:
38 GSL_ERROR ("HPUX PA-RISC only supports default precision rounding",
41 case GSL_IEEE_EXTENDED_PRECISION:
42 GSL_ERROR ("HPUX PA-RISC only supports default precision rounding",
50 case GSL_IEEE_ROUND_TO_NEAREST:
51 fesetround (FE_TONEAREST) ;
53 case GSL_IEEE_ROUND_DOWN:
54 fesetround (FE_DOWNWARD) ;
56 case GSL_IEEE_ROUND_UP:
57 fesetround (FE_UPWARD) ;
59 case GSL_IEEE_ROUND_TO_ZERO:
60 fesetround (FE_TOWARDZERO) ;
63 fesetround (FE_TONEAREST) ;
66 /* Turn on all the exceptions apart from 'inexact' */
68 mode = FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW ;
70 if (exception_mask & GSL_IEEE_MASK_INVALID)
71 mode &= ~ FE_INVALID ;
73 if (exception_mask & GSL_IEEE_MASK_DENORMALIZED)
79 GSL_ERROR ("HP-UX does not support the denormalized operand exception. "
80 "Use 'mask-denormalized' to work around this.",
84 if (exception_mask & GSL_IEEE_MASK_DIVISION_BY_ZERO)
85 mode &= ~ FE_DIVBYZERO ;
87 if (exception_mask & GSL_IEEE_MASK_OVERFLOW)
88 mode &= ~ FE_OVERFLOW ;
90 if (exception_mask & GSL_IEEE_MASK_UNDERFLOW)
91 mode &= ~ FE_UNDERFLOW ;
93 if (exception_mask & GSL_IEEE_TRAP_INEXACT)
99 mode &= ~ FE_INEXACT ;
102 fesettrapenable (mode) ;