From 46651ce6fe013220ed397add242004d764fc0153 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 14:15:05 +0200 Subject: Adding upstream version 14.5. Signed-off-by: Daniel Baumann --- src/include/common/shortest_dec.h | 63 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 src/include/common/shortest_dec.h (limited to 'src/include/common/shortest_dec.h') diff --git a/src/include/common/shortest_dec.h b/src/include/common/shortest_dec.h new file mode 100644 index 0000000..c21f39f --- /dev/null +++ b/src/include/common/shortest_dec.h @@ -0,0 +1,63 @@ +/*--------------------------------------------------------------------------- + * + * Ryu floating-point output. + * + * Portions Copyright (c) 2018-2021, PostgreSQL Global Development Group + * + * IDENTIFICATION + * src/include/common/shortest_dec.h + * + * This is a modification of code taken from github.com/ulfjack/ryu under the + * terms of the Boost license (not the Apache license). The original copyright + * notice follows: + * + * Copyright 2018 Ulf Adams + * + * The contents of this file may be used under the terms of the Apache + * License, Version 2.0. + * + * (See accompanying file LICENSE-Apache or copy at + * http://www.apache.org/licenses/LICENSE-2.0) + * + * Alternatively, the contents of this file may be used under the terms of the + * Boost Software License, Version 1.0. + * + * (See accompanying file LICENSE-Boost or copy at + * https://www.boost.org/LICENSE_1_0.txt) + * + * Unless required by applicable law or agreed to in writing, this software is + * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. + * + *--------------------------------------------------------------------------- + */ +#ifndef SHORTEST_DEC_H +#define SHORTEST_DEC_H + +/*---- + * The length of 25 comes from: + * + * Case 1: -9.9999999999999999e-299 = 24 bytes, plus 1 for null + * + * Case 2: -0.00099999999999999999 = 23 bytes, plus 1 for null + */ +#define DOUBLE_SHORTEST_DECIMAL_LEN 25 + +int double_to_shortest_decimal_bufn(double f, char *result); +int double_to_shortest_decimal_buf(double f, char *result); +char *double_to_shortest_decimal(double f); + +/* + * The length of 16 comes from: + * + * Case 1: -9.99999999e+29 = 15 bytes, plus 1 for null + * + * Case 2: -0.000999999999 = 15 bytes, plus 1 for null + */ +#define FLOAT_SHORTEST_DECIMAL_LEN 16 + +int float_to_shortest_decimal_bufn(float f, char *result); +int float_to_shortest_decimal_buf(float f, char *result); +char *float_to_shortest_decimal(float f); + +#endif /* SHORTEST_DEC_H */ -- cgit v1.2.3