shithub: p9-stm32-example-os

ref: f801657f77f3923ec2388c25bdcb036c8019ba89
dir: /libkern/toupper.c/

View raw version 
toupper(int c)
{

	if(c < 'a' || c > 'z')
		return c;
	return (c-'a'+'A');
}

tolower(int c)
{

	if(c < 'A' || c > 'Z')
		return c;
	return (c-'A'+'a');
}