有关palm os的基本数据类型转换和运算的问题，高分相送

[luxda]

我想把char* 转化为浮点，写了个函数：

编程环境：CodeWarrior 8.0

project Access Path: {Compiler}Palm OS Support

我的函数所在文件为Sscan.c

编译时出现Link Error:
Link Error : Sscan.c ‘_d_itod’ referenced from ‘StrAToF1’ is undefined.

Link Error : Sscan.c ‘_d_div’ referenced from ‘StrAToF1’ is undefined.

Link Error : Sscan.c ‘_d_add’ referenced from ‘StrAToF1’ is undefined.


static double StrAToF1(char* src);

/***********************************************************************
*
* FUNCTION: StrAToF
*
* DESCRIPTION: This routine transform a string to a double
*
* PARAMETERS: src(in) - The string we want to transform
*
* RETURNED: The double we need.
**********************************************************************/
double StrAToF1 (char* src)
{
char integerPart[128];
char decimalPart[128];
int i;
double vReturn = 0.0;
int len;

int nTmp = 0;
len = StrLen(src);

if(!len)
return 0;
else
{
int indexOfPoint = IndexOf(src, '.');
if(indexOfPoint != -1)
{
for(i=0;i<indexOfPoint;i++)
{
integerPart[i] = src[i];
}
for(i=indexOfPoint+1;i<len;i++)
{
decimalPart[i] = src[i];
}
nTmp = StrAToI(decimalPart);
vReturn = (double)nTmp;
for(i=0;i<len-indexOfPoint-1;i++)
{
vReturn = vReturn/10;
}
vReturn += (double)StrAToI(integerPart);
}
else
{
vReturn += (double)StrAToI(src);
}

}
return vReturn;
}
函数StrAToI(char* )由#include <StringMgr.h>包含

[cockhorse]

CodeWarrior本身好像就有这种功能的函数，它好象是转化成一个结构，你可以查一下帮助，具体的记不清楚了。