diff options
Diffstat (limited to 'storage/mroonga/vendor/groonga/plugins/functions/math.c')
| -rw-r--r-- | storage/mroonga/vendor/groonga/plugins/functions/math.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/storage/mroonga/vendor/groonga/plugins/functions/math.c b/storage/mroonga/vendor/groonga/plugins/functions/math.c new file mode 100644 index 00000000..a6a9e260 --- /dev/null +++ b/storage/mroonga/vendor/groonga/plugins/functions/math.c @@ -0,0 +1,142 @@ +/* -*- c-basic-offset: 2 -*- */ +/* + Copyright(C) 2017 Brazil + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License version 2.1 as published by the Free Software Foundation. + + This 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 this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA +*/ + +#ifdef GRN_EMBEDDED +# define GRN_PLUGIN_FUNCTION_TAG functions_math +#endif + +#include <groonga/plugin.h> + +#include <math.h> +#include <stdlib.h> + +static grn_obj * +func_math_abs(grn_ctx *ctx, int n_args, grn_obj **args, + grn_user_data *user_data) +{ + grn_obj *number; + grn_obj *grn_abs_number = NULL; + + if (n_args != 1) { + GRN_PLUGIN_ERROR(ctx, GRN_INVALID_ARGUMENT, + "math_abs(): wrong number of arguments (%d for 1)", + n_args); + return NULL; + } + + number = args[0]; + if (!(number->header.type == GRN_BULK && + grn_type_id_is_number_family(ctx, number->header.domain))) { + grn_obj inspected; + + GRN_TEXT_INIT(&inspected, 0); + grn_inspect(ctx, &inspected, number); + GRN_PLUGIN_ERROR(ctx, GRN_INVALID_ARGUMENT, + "math_abs(): the first argument must be a number: " + "<%.*s>", + (int)GRN_TEXT_LEN(&inspected), + GRN_TEXT_VALUE(&inspected)); + GRN_OBJ_FIN(ctx, &inspected); + return NULL; + } + +#define ABS_AS_IS(return_type, to_type, getter, setter) { \ + grn_abs_number = grn_plugin_proc_alloc(ctx, \ + user_data, \ + (return_type), \ + 0); \ + if (!grn_abs_number) { \ + return NULL; \ + } \ + setter(ctx, grn_abs_number, getter(number)); \ + } +#define ABS_CONVERT_TYPE(func, return_type, to_type, getter, setter) { \ + grn_abs_number = grn_plugin_proc_alloc(ctx, \ + user_data, \ + (return_type), \ + 0); \ + if (!grn_abs_number) { \ + return NULL; \ + } else { \ + to_type abs_number_raw = (to_type)(func)(getter(number)); \ + setter(ctx, grn_abs_number, abs_number_raw); \ + } \ + } + + switch (number->header.domain) { + case GRN_DB_INT8: + ABS_CONVERT_TYPE(abs, GRN_DB_UINT8, uint8_t, GRN_INT8_VALUE, GRN_UINT8_SET); + break; + case GRN_DB_UINT8: + ABS_AS_IS(GRN_DB_UINT8, uint8_t, GRN_UINT8_VALUE, GRN_UINT8_SET); + break; + case GRN_DB_INT16: + ABS_CONVERT_TYPE(abs, GRN_DB_UINT16, uint16_t, GRN_INT16_VALUE, GRN_UINT16_SET); + break; + case GRN_DB_UINT16: + ABS_AS_IS(GRN_DB_UINT16, uint16_t, GRN_UINT16_VALUE, GRN_UINT16_SET); + break; + case GRN_DB_INT32: + ABS_CONVERT_TYPE(labs, GRN_DB_UINT32, uint32_t, GRN_INT32_VALUE, GRN_UINT32_SET); + break; + case GRN_DB_UINT32: + ABS_AS_IS(GRN_DB_UINT32, uint32_t, GRN_UINT32_VALUE, GRN_UINT32_SET); + break; + case GRN_DB_INT64: + ABS_CONVERT_TYPE(llabs, GRN_DB_UINT64, uint64_t, GRN_INT64_VALUE, GRN_UINT64_SET); + break; + case GRN_DB_UINT64: + ABS_AS_IS(GRN_DB_UINT64, uint64_t, GRN_UINT64_VALUE, GRN_UINT64_SET); + break; + case GRN_DB_FLOAT: + ABS_CONVERT_TYPE(fabs, GRN_DB_FLOAT, double, GRN_FLOAT_VALUE, GRN_FLOAT_SET); + break; + default : + break; + } +#undef ABS_CONVERT_TYPE +#undef ABS_AS_IS + + return grn_abs_number; +} + +grn_rc +GRN_PLUGIN_INIT(grn_ctx *ctx) +{ + return ctx->rc; +} + +grn_rc +GRN_PLUGIN_REGISTER(grn_ctx *ctx) +{ + grn_rc rc = GRN_SUCCESS; + + grn_proc_create(ctx, + "math_abs", -1, + GRN_PROC_FUNCTION, + func_math_abs, + NULL, NULL, 0, NULL); + + return rc; +} + +grn_rc +GRN_PLUGIN_FIN(grn_ctx *ctx) +{ + return GRN_SUCCESS; +} |