Frank Vannieuwkerke
A tool that returns the variable type (char, uint8_t, ...)
Homepage
Get a variable type using type traits - a replacement for RTTI typeid().¶
Sources
https://developer.mbed.org/forum/bugs-suggestions/topic/4494/?page=1#comment-22386
http://stackoverflow.com/questions/81870/print-variable-type-in-c
In RTTI, we were able to use something like.
// Depending on the compiler used, this returns 'int', 'i', ....
int main() {
int a= 4;
printf("%s", typeid(a).name());
}
To reduce the code overhead, this can no longer be used in the mbed compiler.
However, we can replace this with type traits.
Example
#include "mbed.h"
#include "GetTypeName.h"
int main()
{
char a = 65;
printf("Type name for <char> '%c' is %s\r\n", a, GetTypeName(a));
// Check whether GetTypeName is of 'char' type.
// Note that strcmp returns 0 when both strings are equal.
if(!strcmp(GetTypeName(a),"char")) printf("'%c' is of 'char' type\r\n", a);
}
Supported declarations
| Variable | Returns |
| char | char |
| uint8_t | uint8_t |
| signed char | int8_t |
| int8_t | int8_t |
| unsigned short | uint16_t |
| uint16_t | uint16_t |
| short | int16_t |
| int16_t | int16_t |
| unsigned int | uint32_t |
| uint32_t | uint32_t |
| int | int32_t |
| int32_t | int32_t |
| unsigned long long | uint64_t |
| uint64_t | uint64_t |
| long long | int64_t |
| int64_t | int64_t |
| float | float |
| double | double |
| bool | bool |