diff options
Diffstat (limited to 'lib/msun/ld128/s_nanl.c')
-rw-r--r-- | lib/msun/ld128/s_nanl.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/lib/msun/ld128/s_nanl.c b/lib/msun/ld128/s_nanl.c new file mode 100644 index 0000000..0f74a13 --- /dev/null +++ b/lib/msun/ld128/s_nanl.c @@ -0,0 +1,46 @@ +/*- + * Copyright (c) 2007 David Schultz + * 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 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 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 <math.h> + +#include "fpmath.h" +#include "../src/math_private.h" + +long double +nanl(const char *s) +{ + union { + union IEEEl2bits ieee; + uint32_t bits[4]; + } u; + + _scan_nan(u.bits, 4, s); + u.ieee.bits.exp = 0x7fff; + u.ieee.bits.manh |= 1ULL << 47; /* make it a quiet NaN */ + return (u.ieee.e); +} |