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/*
* Copyright (c) 2014-2020 Pavel Kalvoda <me@pavelkalvoda.com>
*
* libcbor is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#include "floats_ctrls.h"
#include <math.h>
#include "assert.h"
cbor_float_width cbor_float_get_width(const cbor_item_t *item) {
assert(cbor_isa_float_ctrl(item));
return item->metadata.float_ctrl_metadata.width;
}
uint8_t cbor_ctrl_value(const cbor_item_t *item) {
assert(cbor_isa_float_ctrl(item));
assert(cbor_float_get_width(item) == CBOR_FLOAT_0);
return item->metadata.float_ctrl_metadata.ctrl;
}
bool cbor_float_ctrl_is_ctrl(const cbor_item_t *item) {
assert(cbor_isa_float_ctrl(item));
return cbor_float_get_width(item) == CBOR_FLOAT_0;
}
float cbor_float_get_float2(const cbor_item_t *item) {
assert(cbor_is_float(item));
assert(cbor_float_get_width(item) == CBOR_FLOAT_16);
return *(float *)item->data;
}
float cbor_float_get_float4(const cbor_item_t *item) {
assert(cbor_is_float(item));
assert(cbor_float_get_width(item) == CBOR_FLOAT_32);
return *(float *)item->data;
}
double cbor_float_get_float8(const cbor_item_t *item) {
assert(cbor_is_float(item));
assert(cbor_float_get_width(item) == CBOR_FLOAT_64);
return *(double *)item->data;
}
double cbor_float_get_float(const cbor_item_t *item) {
assert(cbor_is_float(item));
switch (cbor_float_get_width(item)) {
case CBOR_FLOAT_0:
return NAN;
case CBOR_FLOAT_16:
return cbor_float_get_float2(item);
case CBOR_FLOAT_32:
return cbor_float_get_float4(item);
case CBOR_FLOAT_64:
return cbor_float_get_float8(item);
}
return NAN; /* Compiler complaints */
}
bool cbor_get_bool(const cbor_item_t *item) {
assert(cbor_is_bool(item));
return item->metadata.float_ctrl_metadata.ctrl == CBOR_CTRL_TRUE;
}
void cbor_set_float2(cbor_item_t *item, float value) {
assert(cbor_is_float(item));
assert(cbor_float_get_width(item) == CBOR_FLOAT_16);
*((float *)item->data) = value;
}
void cbor_set_float4(cbor_item_t *item, float value) {
assert(cbor_is_float(item));
assert(cbor_float_get_width(item) == CBOR_FLOAT_32);
*((float *)item->data) = value;
}
void cbor_set_float8(cbor_item_t *item, double value) {
assert(cbor_is_float(item));
assert(cbor_float_get_width(item) == CBOR_FLOAT_64);
*((double *)item->data) = value;
}
void cbor_set_ctrl(cbor_item_t *item, uint8_t value) {
assert(cbor_isa_float_ctrl(item));
assert(cbor_float_get_width(item) == CBOR_FLOAT_0);
item->metadata.float_ctrl_metadata.ctrl = value;
}
void cbor_set_bool(cbor_item_t *item, bool value) {
assert(cbor_is_bool(item));
item->metadata.float_ctrl_metadata.ctrl =
value ? CBOR_CTRL_TRUE : CBOR_CTRL_FALSE;
}
cbor_item_t *cbor_new_ctrl() {
cbor_item_t *item = _CBOR_MALLOC(sizeof(cbor_item_t));
_CBOR_NOTNULL(item);
*item = (cbor_item_t){
.type = CBOR_TYPE_FLOAT_CTRL,
.data = NULL,
.refcount = 1,
.metadata = {.float_ctrl_metadata = {.width = CBOR_FLOAT_0,
.ctrl = CBOR_CTRL_NONE}}};
return item;
}
cbor_item_t *cbor_new_float2() {
cbor_item_t *item = _CBOR_MALLOC(sizeof(cbor_item_t) + 4);
_CBOR_NOTNULL(item);
*item = (cbor_item_t){
.type = CBOR_TYPE_FLOAT_CTRL,
.data = (unsigned char *)item + sizeof(cbor_item_t),
.refcount = 1,
.metadata = {.float_ctrl_metadata = {.width = CBOR_FLOAT_16}}};
return item;
}
cbor_item_t *cbor_new_float4() {
cbor_item_t *item = _CBOR_MALLOC(sizeof(cbor_item_t) + 4);
_CBOR_NOTNULL(item);
*item = (cbor_item_t){
.type = CBOR_TYPE_FLOAT_CTRL,
.data = (unsigned char *)item + sizeof(cbor_item_t),
.refcount = 1,
.metadata = {.float_ctrl_metadata = {.width = CBOR_FLOAT_32}}};
return item;
}
cbor_item_t *cbor_new_float8() {
cbor_item_t *item = _CBOR_MALLOC(sizeof(cbor_item_t) + 8);
_CBOR_NOTNULL(item);
*item = (cbor_item_t){
.type = CBOR_TYPE_FLOAT_CTRL,
.data = (unsigned char *)item + sizeof(cbor_item_t),
.refcount = 1,
.metadata = {.float_ctrl_metadata = {.width = CBOR_FLOAT_64}}};
return item;
}
cbor_item_t *cbor_new_null() {
cbor_item_t *item = cbor_new_ctrl();
_CBOR_NOTNULL(item);
cbor_set_ctrl(item, CBOR_CTRL_NULL);
return item;
}
cbor_item_t *cbor_new_undef() {
cbor_item_t *item = cbor_new_ctrl();
_CBOR_NOTNULL(item);
cbor_set_ctrl(item, CBOR_CTRL_UNDEF);
return item;
}
cbor_item_t *cbor_build_bool(bool value) {
return cbor_build_ctrl(value ? CBOR_CTRL_TRUE : CBOR_CTRL_FALSE);
}
cbor_item_t *cbor_build_float2(float value) {
cbor_item_t *item = cbor_new_float2();
_CBOR_NOTNULL(item);
cbor_set_float2(item, value);
return item;
}
cbor_item_t *cbor_build_float4(float value) {
cbor_item_t *item = cbor_new_float4();
_CBOR_NOTNULL(item);
cbor_set_float4(item, value);
return item;
}
cbor_item_t *cbor_build_float8(double value) {
cbor_item_t *item = cbor_new_float8();
_CBOR_NOTNULL(item);
cbor_set_float8(item, value);
return item;
}
cbor_item_t *cbor_build_ctrl(uint8_t value) {
cbor_item_t *item = cbor_new_ctrl();
_CBOR_NOTNULL(item);
cbor_set_ctrl(item, value);
return item;
}
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