diff options
Diffstat (limited to 'lib/msun/src/get_hw_float.c')
-rw-r--r-- | lib/msun/src/get_hw_float.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/msun/src/get_hw_float.c b/lib/msun/src/get_hw_float.c new file mode 100644 index 0000000..6d5f0e0 --- /dev/null +++ b/lib/msun/src/get_hw_float.c @@ -0,0 +1,50 @@ +/*- + * Copyright (c) 1997 Bruce D. Evans + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/types.h> +#include <sys/sysctl.h> + +int __get_hw_float __P((void)); + +static int hw_float = -1; + +int +__get_hw_float() +{ + size_t len; + int mib[2]; + + if (hw_float == -1) { + len = sizeof(hw_float); + mib[0] = CTL_HW; + mib[1] = HW_FLOATINGPT; + if (__sysctl(mib, 2, &hw_float, &len, (void *)0, 0) == -1) + hw_float = 0; /* shouldn't happen; assume the worst */ + } + return (hw_float); +} |