diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32/s_fromfpf_main.c')
-rw-r--r-- | sysdeps/ieee754/flt-32/s_fromfpf_main.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/sysdeps/ieee754/flt-32/s_fromfpf_main.c b/sysdeps/ieee754/flt-32/s_fromfpf_main.c deleted file mode 100644 index 3a4ad80e55..0000000000 --- a/sysdeps/ieee754/flt-32/s_fromfpf_main.c +++ /dev/null @@ -1,82 +0,0 @@ -/* Round to integer type. flt-32 version. - Copyright (C) 2016-2017 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 <errno.h> -#include <fenv.h> -#include <math.h> -#include <math_private.h> -#include <stdbool.h> -#include <stdint.h> - -#define BIAS 0x7f -#define MANT_DIG 24 - -#if UNSIGNED -# define RET_TYPE uintmax_t -#else -# define RET_TYPE intmax_t -#endif - -#include <fromfp.h> - -RET_TYPE -FUNC (float x, int round, unsigned int width) -{ - if (width > INTMAX_WIDTH) - width = INTMAX_WIDTH; - uint32_t ix; - GET_FLOAT_WORD (ix, x); - bool negative = (ix & 0x80000000) != 0; - if (width == 0) - return fromfp_domain_error (negative, width); - ix &= 0x7fffffff; - if (ix == 0) - return 0; - int exponent = ix >> (MANT_DIG - 1); - exponent -= BIAS; - int max_exponent = fromfp_max_exponent (negative, width); - if (exponent > max_exponent) - return fromfp_domain_error (negative, width); - - ix &= ((1U << (MANT_DIG - 1)) - 1); - ix |= 1U << (MANT_DIG - 1); - uintmax_t uret; - bool half_bit, more_bits; - if (exponent >= MANT_DIG - 1) - { - uret = ix; - uret <<= exponent - (MANT_DIG - 1); - half_bit = false; - more_bits = false; - } - else if (exponent >= -1) - { - uint32_t h = 1U << (MANT_DIG - 2 - exponent); - half_bit = (ix & h) != 0; - more_bits = (ix & (h - 1)) != 0; - uret = ix >> (MANT_DIG - 1 - exponent); - } - else - { - uret = 0; - half_bit = false; - more_bits = true; - } - return fromfp_round_and_return (negative, uret, half_bit, more_bits, round, - exponent, max_exponent, width); -} |