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• core.math.lt

core.math.lt

Inputs

Name	Type	Title	Mandatory	Description
input0	core.type.f64	Input 0	True	None
input1	core.type.f64	Input 1	True	None

Outputs

Name	Type	Title	Description
output	core.type.bool	Output	None

Parameters

Function has no parameters

State variables

Function has no state variables

Usage XML code snippet

core_math_lt snippet for FLOW configuration file

<f name="lt" by_spec="core.math.lt">
    <in alias="input0">some_block_1/output</in>
    <in alias="input1">some_block_2/output</in>
</f>

Function’s artifacts

• Declaration for core_math_lt
• Implementation for core_math_lt
• Header of core_math_lt
• Specification of core_math_lt
• Interface of core_math_lt

declaration.py

from fspeclib import *


Function(
    name='core.math.lt',
    title=LocalizedString(
        en='Less-than comparison of numbers'
    ),
    description=None,
    inputs=[
        Input(
            name='input0',
            title='Input 0',
            value_type='core.type.f64'
        ),
        Input(
            name='input1',
            title='Input 1',
            value_type='core.type.f64'
        )
    ],
    outputs=[
        Output(
            name='output',
            title='Output',
            value_type='core.type.bool'
        )
    ]
)

core_math_lt_exec.c

#include "core_math_lt.h"

void core_math_lt_exec(
    const core_math_lt_inputs_t *i,
    core_math_lt_outputs_t *o
)
{
    o->output = (i->input0) < (i->input1);
}

core_math_lt.h

/**
 *  Automatically-generated file. Do not edit!
 */

#ifndef FSPEC_CORE_MATH_LT_H
#define FSPEC_CORE_MATH_LT_H

#include <stdint.h>
#include <eswb/types.h>

#include "function.h"

/* Include declaration of dependency types */
#include "core_type_bool.h"
#include "core_type_f64.h"

/**
 * @brief Inputs of `core.math.lt` function
 */
typedef struct core_math_lt_inputs_ {
    core_type_f64_t input0;  /// Input 0
    core_type_f64_t input1;  /// Input 1

} core_math_lt_inputs_t;

/**
 * @brief Outputs of `core.math.lt` function
 */
typedef struct core_math_lt_outputs_ {
    core_type_bool_t output; /// Output

} core_math_lt_outputs_t;

typedef struct core_math_lt_eswb_descriptors_ {
    eswb_topic_descr_t in_input0;
    eswb_topic_descr_t in_input1;
    eswb_topic_descr_t out_all;
} core_math_lt_eswb_descriptors_t;

typedef struct core_math_lt_interface_ {
    core_math_lt_inputs_t i;
    core_math_lt_outputs_t o;
    core_math_lt_eswb_descriptors_t eswb_descriptors;
} core_math_lt_interface_t;

void core_math_lt_exec(const core_math_lt_inputs_t *i, core_math_lt_outputs_t *o);

#endif // FSPEC_CORE_MATH_LT_H

core_math_lt_spec.c

/**
 *  Automatically-generated file. Do not edit!
 */

#include "core_math_lt.h"
#include <eswb/types.h>

static const param_spec_t *params[1] = {
    NULL
};

static const input_spec_t i_input0 = {
    .name = "input0",
    .annotation = "Input 0",
    .flags = 0
};

static const input_spec_t i_input1 = {
    .name = "input1",
    .annotation = "Input 1",
    .flags = 0
};

static const input_spec_t *inputs[3] = {
    &i_input0,
    &i_input1,
    NULL
};

static const output_spec_t o_output = {
    .name = "output",
    .annotation = "Output",
    .flags = 0
};

static const output_spec_t *outputs[2] = {
    &o_output,
    NULL
};

fspec_rv_t core_math_lt_call_init_inputs(void *dh, const func_conn_spec_t *conn_spec, eswb_topic_descr_t mounting_td);

fspec_rv_t core_math_lt_call_init_outputs(
    void *dh,
    const func_conn_spec_t *conn_spec,
    eswb_topic_descr_t mounting_td,
    const char *func_name
);

void core_math_lt_call_exec(void *dh);

const function_spec_t atomic_core_math_lt_spec = {
    .name = "core.math.lt",
    .annotation = "Less-than comparison of numbers",
    .inputs = inputs,
    .outputs = outputs,
    .params = params
};

const function_calls_t atomic_core_math_lt_calls = {
    .interface_handle_size = sizeof(core_math_lt_interface_t),
    .init = NULL,
    .init_inputs = core_math_lt_call_init_inputs,
    .init_outputs = core_math_lt_call_init_outputs,
    .pre_exec_init = NULL,
    .exec = core_math_lt_call_exec,
    .set_params = NULL
};

const function_handler_t atomic_core_math_lt_handler = {
    .spec = &atomic_core_math_lt_spec,
    .calls = &atomic_core_math_lt_calls,
    .extension_handler = NULL
};

core_math_lt_interface.c

/**
 *  Automatically-generated file. Do not edit!
 */

#include "core_math_lt.h"

#include "error.h"
#include <eswb/api.h>
#include <eswb/topic_proclaiming_tree.h>
#include <eswb/errors.h>

int core_math_lt_interface_inputs_init(
    core_math_lt_interface_t *interface,
    const func_conn_spec_t *conn_spec,
    eswb_topic_descr_t mounting_td
)
{
    eswb_rv_t rv;
    int errcnt_no_topic = 0;
    int errcnt_no_input = 0;
    const char *topic_path_in_input0 = fspec_find_path2connect(conn_spec,"input0");
    const char *topic_path_in_input1 = fspec_find_path2connect(conn_spec,"input1");

    // Connecting mandatory input "input0"
    if (topic_path_in_input0 != NULL) {
        rv = eswb_connect_nested(mounting_td, topic_path_in_input0, &interface->eswb_descriptors.in_input0);
        if(rv != eswb_e_ok) {
            error("failed connect input \"input0\" to topic \"%s\": %s", topic_path_in_input0, eswb_strerror(rv));
            errcnt_no_topic++;
        }
    } else {
        error("mandatory input \"input0\" is not speicifed");
        errcnt_no_input++;
    }

    // Connecting mandatory input "input1"
    if (topic_path_in_input1 != NULL) {
        rv = eswb_connect_nested(mounting_td, topic_path_in_input1, &interface->eswb_descriptors.in_input1);
        if(rv != eswb_e_ok) {
            error("failed connect input \"input1\" to topic \"%s\": %s", topic_path_in_input1, eswb_strerror(rv));
            errcnt_no_topic++;
        }
    } else {
        error("mandatory input \"input1\" is not speicifed");
        errcnt_no_input++;
    }

    if ((errcnt_no_input > 0) || (errcnt_no_topic > 0)) {
        if (errcnt_no_input > errcnt_no_topic) {
            return fspec_rv_no_input;
        } else {
            return fspec_rv_no_topic;
        }
    }
    return fspec_rv_ok;
}

fspec_rv_t core_math_lt_interface_inputs_update(core_math_lt_interface_t *interface)
{
    eswb_rv_t rv;

    rv = eswb_read(interface->eswb_descriptors.in_input0, &interface->i.input0);
    if(rv != eswb_e_ok) {
        /*FIXME nothing to do yet*/
    }

    rv = eswb_read(interface->eswb_descriptors.in_input1, &interface->i.input1);
    if(rv != eswb_e_ok) {
        /*FIXME nothing to do yet*/
    }

    return 0;
}

fspec_rv_t core_math_lt_interface_outputs_init(
    core_math_lt_interface_t *interface,
    const func_conn_spec_t *conn_spec,
    eswb_topic_descr_t mounting_td,
    const char *func_name
)
{
    TOPIC_TREE_CONTEXT_LOCAL_DEFINE(cntx, 2);
    core_math_lt_outputs_t out;
    eswb_rv_t rv;

    topic_proclaiming_tree_t *rt = usr_topic_set_struct(cntx, out, func_name);

    usr_topic_add_struct_child(cntx, rt, core_math_lt_outputs_t, output, "output", tt_int32);
    rv = eswb_proclaim_tree(mounting_td, rt, cntx->t_num, &interface->eswb_descriptors.out_all);
    if (rv != eswb_e_ok) {
        return fspec_rv_publish_err;
    }

    return fspec_rv_ok;
}

fspec_rv_t core_math_lt_interface_outputs_update(core_math_lt_interface_t *interface)
{
    eswb_rv_t rv;

    rv = eswb_update_topic(interface->eswb_descriptors.out_all, &interface->o);
    if (rv != eswb_e_ok) {
        return 1;
    }

    return 0;
}

void core_math_lt_interface_update(core_math_lt_interface_t *interface)
{
    core_math_lt_interface_inputs_update(interface);
    core_math_lt_exec(&interface->i, &interface->o);
    core_math_lt_interface_outputs_update(interface);
}

fspec_rv_t core_math_lt_call_init_inputs(void *dh, const func_conn_spec_t *conn_spec, eswb_topic_descr_t mounting_td)
{
    core_math_lt_interface_t *interface = (core_math_lt_interface_t*) dh;
    return core_math_lt_interface_inputs_init(interface, conn_spec, mounting_td);
}

fspec_rv_t core_math_lt_call_init_outputs(
    void *dh,
    const func_conn_spec_t *conn_spec,
    eswb_topic_descr_t mounting_td,
    const char *func_name
)
{
    core_math_lt_interface_t *interface = (core_math_lt_interface_t*) dh;
    return core_math_lt_interface_outputs_init(interface, conn_spec, mounting_td, func_name);
}

void core_math_lt_call_exec(void *dh)
{
    core_math_lt_interface_t *interface = (core_math_lt_interface_t*) dh;
    core_math_lt_interface_update(interface);
}

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