s3c2440-LCD.rar_2440 l_2440ARM LCD_LCD 控制器_s3c2440_s3c2440 lcd

/* ****************************************************************************************************************** * xxx project ---- xxx module * * Copyright(C), 2006-2007, Allwinner Microelectronic Co., Ltd. * All Rights Reserved * *File Name�� format_transformed.c * *Author�� Wang Yugang * *Version 1.0 * *Date 2007.7.30 * *Description : This file provides several format_transformed functions, as following: * * void int_to_string_dec( int input , char * str) * This function is to convert an 'int' data 'input' to a string in decimalism, and the string * converted is in 'str'. * void Uint_to_string_dec( unsigned int input, char * str ) * This function is to convert an 'unsigned int' data 'input' to a string in decimalism, and the * string converted is in 'str'. * void int_to_string_hex( int input, char * str, int hex_flag ) * This function is to convert an 'int' data 'input' to a string in hex, and the string * converted is in 'str'. * * Function assert() is used by above functions just for debugging, in release * version, "#define NDEBUG" should be placed on the top of current file. * *Others : None at present. * * * History : * * <Author> <time> <version> <desricption> * * Wangyugang 2007.7.30 1.0 build the file * ******************************************************************************************************************* */ #include <assert.h> #include <stdlib.h> #define MASK_LOW4 0xf #define NEGATIVE 1 #define POSITIVE 0 #define HEX_x 'x' #define HEX_X 'X' /* ****************************************************************************************************************** * *Function Name : int_to_string_dec * *Description : This function is to convert an 'int' data 'input' to a string in decimalism, and the string * converted is in 'str'. * *Input : int input : 'int' data to be converted. * char * str : the start address of the string storing the converted result. * *Output : void * *call for : assert(), declared in ANSI C standard head file <assert.h>. Function assert() is just for debugging, * in release version, "#define NDEBUG" should be placed on the top of current file. * *Others : None at present. * ******************************************************************************************************************* */ void int_to_string_dec( int input , char * str) { char stack[12]; char sign_flag = POSITIVE ; // 'sign_flag indicates wheater 'input' is positive or negative, default int i ; // value is 'POSITIVE'. int j ; //assert( str != NULL ); // Insure 'str' is an valid pointer. if( input == 0 ) { str[0] = '0'; str[1] = '\0'; // 'str' must end with '\0' return ; } if( input < 0 ) // If 'input' is negative, 'input' is assigned to its absolute value. { sign_flag = NEGATIVE ; input = -input ; } for( i = 0; input > 0; ++i ) { stack[i] = input%10 + '0'; // characters in reverse order are put in 'stack' . input /= 10; } // at the end of 'for' loop, 'i' is the number of characters. j = 0; if( sign_flag == NEGATIVE ) str[j++] = '-'; // If 'input' is negative, minus sign '-' is placed in the head. for( --i ; i >= 0; --i, ++j ) str[j] = stack[i]; str[j] = '\0'; // 'str' must end with '\0' } /* ****************************************************************************************************************** * *Function Name : Uint_to_string_dec * *Description : This function is to convert an 'unsigned int' data 'input' to a string in decimalism, and the * string converted is in 'str'. * *Input : int input : 'unsigned int' data to be converted. * char * str : the start address of the string storing the converted result. * *Output : void * *call for : assert(), declared in ANSI C standard head file <assert.h>. Function assert() is just for debugging, * in release version, "#define NDEBUG" should be placed on the top of current file. * *Others : None at present. * ******************************************************************************************************************* */ void Uint_to_string_dec( unsigned int input, char * str ) { char stack[11] ; int i ; int j ; //assert( str != NULL ); // Insure 'str' is an valid pointer. if( input == 0 ) { str[0] = '0'; str[1] = '\0'; // 'str' must end with '\0' return ; } for( i = 0; input > 0; ++i ) { stack[i] = input%10 + '0'; // characters in reverse order are put in 'stack' . input /= 10; } // at the end of 'for' loop, 'i' is the number of characters. for( --i, j = 0; i >= 0; --i, ++j ) str[j] = stack[i]; str[j] = '\0'; // 'str' must end with '\0' } /* ****************************************************************************************************************** * *Function Name : int_to_string_hex * *Description : This function is to convert an 'int' data 'input' to a string in hex, and the string * converted is in 'str'. * *Input : int input : 'int' data to be converted. * char * str : the start address of the string storing the converted result. * int hex_flag : hex_flag is just a option to distinguish whether hex format is '0f' or '0F'. * *Output : void * *call for : assert(), declared in ANSI C standard head file <assert.h>. Function assert() is just for debugging, * in release version, "#define NDEBUG" should be placed on the top of current file. * *Others : None at present. * ******************************************************************************************************************* */ void int_to_string_hex( int input, char * str, int hex_flag ) { int i; int j; char stack[8]; //assert( str != NULL ); //Insure 'str' is an valid pointer. for( i = 0; i < 8; ++i ) { if( hex_flag == HEX_X ) stack[i] = "0123456789ABCDEF"[input&MASK_LOW4]; else stack[i] = "0123456789abcdef"[input&MASK_LOW4]; input >>= 4; } str[0] = '0'; str[1] = hex_flag; // Hex format shoud start with "0x" or "0X". for( i = 7, j = 2; i >= 0; --i, ++j ) str[j] = stack[i]; str[j] = '\0'; // 'str' must end with '\0' }