diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32')
-rw-r--r-- | sysdeps/ieee754/flt-32/s_nextupf.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/ieee754/flt-32/s_nextupf.c b/sysdeps/ieee754/flt-32/s_nextupf.c new file mode 100644 index 0000000000..9f3398e02e --- /dev/null +++ b/sysdeps/ieee754/flt-32/s_nextupf.c @@ -0,0 +1,46 @@ +/* Return the least floating-point number greater than X. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <math_private.h> + +/* Return the least floating-point number greater than X. */ +float +__nextupf (float x) +{ + int32_t hx, ix; + + GET_FLOAT_WORD (hx, x); + ix = hx & 0x7fffffff; + if (ix == 0) + return FLT_TRUE_MIN; + if (ix > 0x7f800000) /* x is nan. */ + return x + x; + if (hx >= 0) + { /* x > 0. */ + if (isinf (x)) + return x; + hx += 1; + } + else + hx -= 1; + SET_FLOAT_WORD (x, hx); + return x; +} + +weak_alias (__nextupf, nextupf) |