C / C++ / MFC

Chesnokov Yuriy wrote:

Are there similar resources to help in naming during coding?

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Chesnokov Yuriy wrote:

I'd like to have a reference book or resource as in the link from the topic

Chesnokov Yuriy wrote:

e.g. list of names for object initialization and their opposites

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modified on Thursday, September 16, 2010 7:58 AM

while(iter!=v1.end())
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   if(remove)
   {
      iter = v1.erase(iter);
   }
   else
   {
      iter++;
   }
}

/*
* bitop.h
*
*  Created on: May 3, 2010
*      Author: val
*/

#ifndef BITOP_H_
#define BITOP_H_
#include "limetypes.hh"
#include <stdlib.h>

#ifdef __cplusplus
extern "C" {
	namespace LimeBrokerage {
#endif /* __cplusplus */


#ifndef MIN
#define MIN(X, Y)  ((X) < (Y) ? (X) : (Y))
#endif

#ifndef MAX
#define MAX(X, Y)  ((X) > (Y) ? (X) : (Y))
#endif

		enum BIT_FIELD_SIGN { BIT_FIELD_POSITIVE_SIGN, BIT_FIELD_NEGATIVE_SIGN };

		// Used to validate sizeof() structures,
		// e.g. COMPILE_TIME_ASSERT(sizeof(book_item)==2*DCACHE_LINE_SIZE)
#define CONCAT(x,y) x##y
#define _CT_ASSERT(expr,unique) char CONCAT(constraint,unique)[(expr)?1:-1]
#define COMPILE_TIME_ASSERT(expr) _CT_ASSERT(expr,__LINE__)

		/*
		* This portion defines set of macros that allow bit manipulation.
		* It allow packing and unpacking set of fields into one set of
		* contiguous bits.
		*/

		//Decode function list of parameters declaration
#define DECODE_DECLARATION_BODY(type, name, value) \
	, type* name##_val

		//Decode function declaration
#define DECODE_DECLARATION(name, list) \
	int name##_decode(name##_t* __result \
	list(DECODE_DECLARATION_BODY) \
	)

#define DECODE_DEBUG_DECLARATION(name, list) \
	int name##_decode_debug(name##_t* __result \
	list(DECODE_DECLARATION_BODY) \
	)

		//Individual value decoding
#define DECODE_DEFINITION_BODY(type, name, value) \
	__shift_bits -= name; \
	__tmp = *__result >> __shift_bits; \
	__tmp &= (__one << name) - 1; \
	*name##_val = __tmp; \
	__tmp = 0;

#define DECODE_BODY(name, list) \
		{ \
		name##_t __tmp = 0;\
		name##_t __one = 1;\
		int __shift_bits = sizeof(name##_t) * 8; \
		list(DECODE_DEFINITION_BODY) \

		//Decode function definition
#define DECODE_DEFINITION(name, list) \
	DECODE_DECLARATION(name, list) \
	DECODE_BODY(name, list) \
	return 0; \
		} \

#define POPULATE_RES_STRING(type, name, value) \
	__pos += sprintf(&__output_str[__pos], "%d, ", (int) (* name##_val));

#define PRINT_RESULTS(function, name, list) \
	int __pos = 0; \
	char __output_str[1024*10]; \
	list(POPULATE_RES_STRING) \
	printf("%s: %lld = %s\n", #function, (long long int)(*__result), __output_str); \
	return 0; \

#define DECODE_DEBUG_DEFINITION(name, list) \
	DECODE_DEBUG_DECLARATION(name, list)\
	DECODE_BODY(name, list) \
	PRINT_RESULTS(decode, name, list) \
	} \

		//Encode function list of parameters declaration
#define ENCODE_DECLARATION_BODY(type, name, value) \
	, type* name##_val

		//Encode function declaration
#define ENCODE_DECLARATION(name, list) \
	int name##_encode(name##_t* __result \
	list(ENCODE_DECLARATION_BODY) \
	)

#define ENCODE_DEBUG_DECLARATION(name, list) \
	int name##_encode_debug(name##_t* __result \
	list(ENCODE_DECLARATION_BODY) \
	)
		//Individual value encoding
#define ENCODE_DEFINITION_BODY(type, name, value) \
	__shift_bits -= name; \
	__tmp = *name##_val; \
	__tmp = __tmp << __shift_bits; \
	*__result |= __tmp;

#define ENCODE_BODY(name, list) \
		{ \
		name##_t __tmp = 0; \
		name##_t __one = 1; \
		int __shift_bits = sizeof(name##_t) * 8; \
		list(ENCODE_DEFINITION_BODY) \


		//Encode function definition
#define ENCODE_DEFINITION(name, list) \
	ENCODE_DECLARATION(name, list) \
	ENCODE_BODY(name, list) \
	return 0; \
		}

#define ENCODE_DEBUG_DEFINITION(name, list) \
	ENCODE_DEBUG_DECLARATION(name, list) \
	ENCODE_BODY(name, list) \
	PRINT_RESULTS(encode, name, list) \
	return 0; \
}

		//Allow to sum value of all the bitfields
#define BITFIELD_SUM(type, name, value) \
	+ name

		//Define individual bit value pairs for enum declaration
#define BITOP_DEFINITION_BODY(type, name, value) \
	name = value,


		/*
		* This macro defines set of fields that can be packed into
		* data structure identified by 'name'. It declare enum of bit fields passed as a list.
		* It checks that sum of the
		* bits can fit into the data structure and identifies functions to
		* encode/decode fields.
		* It defines 2 functions:
		* int 'name'_decode(name* _output, type1* var1, type2* var2);
		* int 'name'_encode(name* _output, type1* var1, type2* var2);
		* Total number of parameters in each function depends on total number of elements
		* in definition list *
		* (see spread_manager.c|h for usage example)
		*/
#define BITOP_DEFINITION(name, list) \
	enum name##_bits { \
	list(BITOP_DEFINITION_BODY) \
		}; \
		typedef enum name##_bits name##_bits_t; \
		ENCODE_DECLARATION(name, list); \
		DECODE_DECLARATION(name, list);

#define BITOP_COMPILE_TIME_ASSERT(name, list) \
	COMPILE_TIME_ASSERT((sizeof(name##_t) * 8) == \
	0 \
	list(BITFIELD_SUM) \
	);

		typedef struct limeq_price {
			int32_t mantissa;
			int8_t exponent;
		} limeq_price;

		/*
		* This function finds greater common divider accross array of 1 byte integers
		* set -  is array of elements element_size each that contains uint8_t number to calculate greater_common_divider for
		* element_size - is size of the each element in the set
		* element_offset - position of required uint8_t field in the element
		* nmemb - number of elements in the set
		*/
		uint8_t greater_common_divider(void* set, size_t element_size, size_t element_offset, size_t nmemb);

		/*
		* Normalize mantissa of the price
		* Divide all the mantissas by max power of 10 possible
		* Calculate minimum exponent while doing it
		*/
		void normalize_mantissa(limeq_price* price, int8_t* min_exponent);

		/*
		* Recalculate set of prices based on minimum exponent
		*/
		bool normalize_exponent(limeq_price* set, size_t nmemb, int8_t* min_exponent);

		/**
		* Siac specific function shared by API and QS
		*/

#define SIAC_SALES_CONDITIONS_LEN 4
#define SIAC_LONG_MSG_SALE_CONDITIONS 1
		bool decode_siac_sales_conditions(uint8_t siac_sales_conditions, uint8_t additionalProperties, char sales_conditions[SIAC_SALES_CONDITIONS_LEN]);
		void encode_siac_sales_conditions(uint8_t *reserved, uint8_t *additional_prop, char sales_conditions[SIAC_SALES_CONDITIONS_LEN]);

		/**
		* 64 bit hton and ntoh
		*/
		uint64_t lime_ntohll(uint64_t);
		uint64_t lime_htonll(uint64_t);

#ifdef __cplusplus
} //extern "C"
} // namespace LimeBrokerage
#endif /* __cplusplus */
#endif /* BITOP_H_ */

/*
 * common_util.c
 *
 *  Created on: May 28, 2010
 *      Author: val
 */

#include <stdio.h>
#include "common_util.h"
#include "limeq_def.h"
#ifdef __linux__
#include "byteswap.h"
#endif
#ifdef WIN32
#include <winsock2.h>
#include <Windows.h>
#endif

#ifdef __cplusplus
extern "C" {
namespace LimeBrokerage {
#endif /* __cplusplus */


const int power10[] = {
        1,
        10,
        100,
        1000,
        10000,
        100000,
        1000000,
        10000000,
        100000000,
        1000000000
};
const int power10_size = sizeof(power10)/sizeof(power10[0]);

static const uint8_t _prime_numbers[] = {
	2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47,
	53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107,
	109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167,
	173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233,
	239, 241, 251
};
static const uint8_t _prime_numbers_size = sizeof(_prime_numbers)/sizeof(_prime_numbers[0]);

/*
 * Extract specific element from array of alements size sturct_size
 */
uint8_t* _get_element(void* array, int array_pos, size_t struct_size, size_t field_offset)
{
	return (uint8_t*)((uint8_t*)array+(array_pos * struct_size) + field_offset);
}
#define MAX_ELEMENTS 1024
static uint8_t divided_set[MAX_ELEMENTS];
/*
 * Calculate greatest common divider
 */
uint8_t greater_common_divider(void* set, size_t element_size, size_t element_offset, size_t nmemb)
{
	uint8_t res = 1;
	size_t es = element_size;
	size_t eo = element_offset;
	void* current_set = set;
	if (nmemb > MAX_ELEMENTS) return 1;

	for (int i = 0; i < _prime_numbers_size; i++) {
		bool all_divided = true;

		for (int j = 0; j < nmemb; j++) {

			uint8_t* element = _get_element(current_set, j, es, eo);
			if (_prime_numbers[i] > *element) {
				return res;
			}
			if (((*element) % _prime_numbers[i])  == 0) {
				divided_set[j] = (*element) / _prime_numbers[i];
			}
			else {
				all_divided = false;
			}
		}
		if (all_divided) {
			res *= _prime_numbers[i];
			current_set = divided_set;
			es = 1;
			eo = 0;
		}
	}
	return res;
}
/*
 * Normalize mantissa of the price point
 */
void normalize_mantissa(limeq_price* price, int8_t* min_exponent)
{
	//Normalize mantissa by removing trailing zeroes
	int zeroes = 0;
	for (int i = 1; i < power10_size; i++) {
		if ((price->mantissa % power10[i]) == 0) {
			zeroes = i;
		}
		else {
			break;
		}
	}
	price->mantissa /= power10[zeroes];
	price->exponent += zeroes;
	if (abs(price->exponent) > power10_size) {
		//Exponent can't be bigger than that
		int diff = price->exponent - power10_size;
		price->mantissa *= power10[diff];
		price->exponent += diff;
	}
	*min_exponent = MIN(*min_exponent, price->exponent);
}
/*
 * Normalize pricess to minimum exponent
 */
bool normalize_exponent(limeq_price* set, size_t nmemb, int8_t* min_exponent)
{
	for (int i = 0; i < nmemb; i++) {
		int8_t exp = set[i].exponent - *min_exponent;
		if (abs(exp) > power10_size) {
			printf("Exponent is too big %d\n", exp);
			return false;
		}
		if (exp < 0) {
			set[i].mantissa /= power10[exp * -1];
		}
		else {
			set[i].mantissa *= power10[exp];
		}
		set[i].exponent = *min_exponent;
	}
	return true;
}

void encode_siac_sales_conditions(uint8_t *reserved, uint8_t *additional_prop,
		char sales_conditions[SIAC_SALES_CONDITIONS_LEN]) {
	*reserved = 0;
	*additional_prop = 0;

	//Setting 0 byte of siac sale conditions
	switch (sales_conditions[0]) { //Enconding bit 0-3
	case '@':
		*reserved |= 15 << 0;
		break;
	case ' ':
		*reserved |= 14 << 0;
		break;
	case 'C':
		*reserved |= 13 << 0;
		break;
	case 'N':
		*reserved |= 12 << 0;
		break;
	case 'R':
		*reserved |= 11 << 0;
		break;
	default:
		*reserved |= 0 << 0;
		break;
	}
	//Setting 1st byte of siac sale conditions
	//This field occupy last 4 bits of reserve byte
	switch (sales_conditions[1]) {
	case ' ':
		*reserved |= 15 << 4;
		break;
	case 'F':
		*reserved |= 14 << 4;
		break;
	case 'O':
		*reserved |= 13 << 4;
		break;
	case '4':
		*reserved |= 12 << 4;
		break;
	case '5':
		*reserved |= 11 << 4;
		break;
	case '6':
		*reserved |= 10 << 4;
		break;
	case '7':
		*reserved |= 9 << 4;
		break;
	case '8':
		*reserved |= 8 << 4;
		break;
	case '9':
		*reserved |= 7 << 4;
		break;
	default:
		*reserved |= 0 << 4;
		break;

	}
	//3rd byte of siac sale conditions
	//This byte occupy 1st 4 bits of additional_prop byte
	switch (sales_conditions[2]) {
	case ' ':
		*additional_prop |= 15 << 0;
		break;
	case 'L':
		*additional_prop |= 14 << 0;
		break;
	case 'T':
		*additional_prop |= 13 << 0;
		break;
	case 'U':
		*additional_prop |= 12 << 0;
		break;
	case 'Z':
		*additional_prop |= 11 << 0;
		break;
	default:
		*additional_prop |= 0 << 0;
		break;

	}
	//4th byte of siac sale conditions
	//This byte occupy 2nd 4 bits of additional_prop byte
	switch (sales_conditions[3]) {
	case ' ':
		*additional_prop |= 15 << 4;
		break;
	case 'B':
		*additional_prop |= 14 << 4;
		break;
	case 'E':
		*additional_prop |= 13 << 4;
		break;
	case 'G':
		*additional_prop |= 12 << 4;
		break;
	case 'H':
		*additional_prop |= 11 << 4;
		break;
	case 'I':
		*additional_prop |= 10 << 4;
		break;
	case 'K':
		*additional_prop |= 9 << 4;
		break;
	case 'P':
		*additional_prop |= 8 << 4;
		break;
	case 'Q':
		*additional_prop |= 7 << 4;
		break;
	case 'X':
		*additional_prop |= 6 << 4;
		break;
	default:
		*additional_prop |= 0 << 4;
		break;

	}
}

bool decode_siac_sales_conditions(uint8_t siac_sales_conditions,
		uint8_t additionalProperties,
		char sales_conditions[SIAC_SALES_CONDITIONS_LEN]) {
	//Siac trade properties
	uint8_t byte_0 = siac_sales_conditions & 0xF;
	uint8_t byte_1 = ((siac_sales_conditions & 0xF0) >> 4);
	uint8_t byte_2 = (additionalProperties & 0xF);
	uint8_t byte_3 = ((additionalProperties & 0xF0) >> 4);
	bool res = true;
	switch (byte_0) {
	case 15:
		sales_conditions[0] = '@';
		break;
	case 14:
		sales_conditions[0] = ' ';
		break;
	case 13:
		sales_conditions[0] = 'C';
		break;
	case 12:
		sales_conditions[0] = 'N';
		break;
	case 11:
		sales_conditions[0] = 'R';
		break;
	default:
		//      printf("Unknown byte 0 of trade conditions: %d = %c", byte_0, byte_0);
		sales_conditions[0] = 13;
		res = false;
		break;
	}

	switch (byte_1) {
	case 15:
		sales_conditions[1] = ' ';
		break;
	case 14:
		sales_conditions[1] = 'F';
		break;
	case 13:
		sales_conditions[1] = 'O';
		break;
	case 12:
		sales_conditions[1] = '4';
		break;
	case 11:
		sales_conditions[1] = '5';
		break;
	case 10:
		sales_conditions[1] = '6';
		break;
	case 9:
		sales_conditions[1] = '7';
		break;
	case 8:
		sales_conditions[1] = '8';
		break;
	case 7:
		sales_conditions[1] = '9';
		break;
	default:
		//      printf("Unknown byte 1 of trade conditions: %d = %c", byte_1, byte_1);
		sales_conditions[1] = 13;
		res = false;
		break;
	}

	switch (byte_2) {
	case 15:
		sales_conditions[2] = ' ';
		break;
	case 14:
		sales_conditions[2] = 'L';
		break;
	case 13:
		sales_conditions[2] = 'T';
		break;
	case 12:
		sales_conditions[2] = 'U';
		break;
	case 11:
		sales_conditions[2] = 'Z';
		break;
	default:
		//      printf("Unknown byte 0 of trade conditions: %d = %c", byte_1, byte_1);
		sales_conditions[2] = 13;
		res = false;
		break;
	}

	switch (byte_3) {
	case 15:
		sales_conditions[3] = ' ';
		break;
	case 14:
		sales_conditions[3] = 'B';
		break;
	case 13:
		sales_conditions[3] = 'E';
		break;
	case 12:
		sales_conditions[3] = 'G';
		break;
	case 11:
		sales_conditions[3] = 'H';
		break;
	case 10:
		sales_conditions[3] = 'I';
		break;
	case 9:
		sales_conditions[3] = 'K';
		break;
	case 8:
		sales_conditions[3] = 'P';
		break;
	case 7:
		sales_conditions[3] = 'Q';
		break;
	case 6:
		sales_conditions[3] = 'X';
		break;
	default:
		//      printf("Unknown byte 0 of trade conditions: %d = %c", byte_1, byte_1);
		sales_conditions[3] = 13;
		res = false;
		break;
	}
	return res;
}

ENCODE_DEFINITION(leg_def_data, LEG_INFO_REQUEST_BITS_LIST);
DECODE_DEFINITION(leg_def_data, LEG_INFO_REQUEST_BITS_LIST);


ENCODE_DEFINITION(spread_data, SPREAD_DATA_BITS_LIST);
DECODE_DEFINITION(spread_data, SPREAD_DATA_BITS_LIST);


#ifndef __bswap_64
#define __bswap_64(x) (((_int64)(ntohl((int)((x << 32) >> 32))) << 32) | (unsigned int)ntohl(((int)(x >> 32))))
#endif //__linux__

# if BYTE_ORDER == LITTLE_ENDIAN

#  define htobe64(x) __bswap_64 (x)
#  define htole64(x) (x)
#  define be64toh(x) __bswap_64 (x)
#  define le64toh(x) (x)
# else

#  define htobe64(x) (x)
#  define htole64(x) __bswap_64 (x)
#  define be64toh(x) (x)
#  define le64toh(x) __bswap_64 (x)
# endif


uint64_t lime_ntohll(uint64_t val) {
	return be64toh(val);
}
uint64_t lime_htonll(uint64_t val) {
	return htobe64(val);
}


#ifdef __cplusplus
} //extern C
} //namespace LimeBrokerage
#endif

pjdriverdude wrote:

However, the loadcursor function is either returning a HCURSOR of zero...

HCURSOR blankCursor = LoadCursorFromFile("C:\\WINDOWS\\Cursors\\blank.cur") ;
::SetSystemCursor(blankCursor, OCR_NORMAL) ;

overloaded Name wrote:

how would I know that which #if is missing in tapi.h heafer file??

overloaded Name wrote:

File: tapi.h...............
Line: 5281