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author | David Robillard <d@drobilla.net> | 2021-02-25 10:27:59 -0500 |
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committer | David Robillard <d@drobilla.net> | 2021-03-08 23:23:05 -0500 |
commit | c4821c8e6bf1f81c6ea31e11ebc0fc1666e9337b (patch) | |
tree | a62995534f5f606ac2f8bae22d525532b824cb5e /subprojects/exess/src/double.c | |
parent | 6bcd18ae60482790b645a345f718e7099250f261 (diff) | |
download | serd-c4821c8e6bf1f81c6ea31e11ebc0fc1666e9337b.tar.gz serd-c4821c8e6bf1f81c6ea31e11ebc0fc1666e9337b.tar.bz2 serd-c4821c8e6bf1f81c6ea31e11ebc0fc1666e9337b.zip |
Add exess from git@gitlab.com:drobilla/exess.git 4638b1f
Diffstat (limited to 'subprojects/exess/src/double.c')
-rw-r--r-- | subprojects/exess/src/double.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/subprojects/exess/src/double.c b/subprojects/exess/src/double.c new file mode 100644 index 00000000..2934010d --- /dev/null +++ b/subprojects/exess/src/double.c @@ -0,0 +1,53 @@ +/* + Copyright 2019-2021 David Robillard <d@drobilla.net> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +#include "decimal.h" +#include "read_utils.h" +#include "scientific.h" +#include "strtod.h" +#include "write_utils.h" + +#include "exess/exess.h" + +#include <math.h> +#include <string.h> + +ExessResult +exess_read_double(double* const out, const char* const str) +{ + *out = (double)NAN; + + const size_t i = skip_whitespace(str); + ExessDecimalDouble in = {EXESS_NAN, 0u, 0, {0}}; + const ExessResult r = parse_double(&in, str + i); + + if (!r.status) { + *out = parsed_double_to_double(in); + } + + return result(r.status, i + r.count); +} + +ExessResult +exess_write_double(const double value, const size_t buf_size, char* const buf) +{ + const ExessDecimalDouble decimal = exess_measure_double(value); + const ExessResult r = + buf ? exess_write_scientific(decimal, buf_size, buf) + : result(EXESS_SUCCESS, exess_scientific_string_length(decimal)); + + return end_write(r.status, buf_size, buf, r.count); +} |