diff options
Diffstat (limited to 'lib/libc/arch/sparc/gen/fpclassifyl.c')
-rw-r--r-- | lib/libc/arch/sparc/gen/fpclassifyl.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/lib/libc/arch/sparc/gen/fpclassifyl.c b/lib/libc/arch/sparc/gen/fpclassifyl.c new file mode 100644 index 00000000000..d569ef90430 --- /dev/null +++ b/lib/libc/arch/sparc/gen/fpclassifyl.c @@ -0,0 +1,44 @@ +/* $OpenBSD: fpclassifyl.c,v 1.1 2008/09/07 20:36:08 martynas Exp $ */ +/* + * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> +#include <machine/ieee.h> +#include <math.h> + +int +__fpclassifyl(long double e) +{ + struct ieee_ext *p = (struct ieee_ext *)&e; + + if (p->ext_exp == 0) { + if (p->ext_frach == 0 && p->ext_frachm == 0 && + p->ext_fraclm == 0 && p->ext_fracl == 0) + return FP_ZERO; + else + return FP_SUBNORMAL; + } + + if (p->ext_exp == EXT_EXP_INFNAN) { + if (p->ext_frach == 0 && p->ext_frachm == 0 && + p->ext_fraclm == 0 && p->ext_fracl == 0) + return FP_INFINITE; + else + return FP_NAN; + } + + return FP_NORMAL; +} |