shithub: riscv

ref: 3b36daa2bb8c0f4169455baf829b9695b520c5fc
dir: /sys/src/libc/port/toupper.c/

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#include	<ctype.h>

int
toupper(int c)
{

	if(c < 'a' || c > 'z')
		return c;
	return _toupper(c);
}

int
tolower(int c)
{

	if(c < 'A' || c > 'Z')
		return c;
	return _tolower(c);
}