shithub: riscv

ref: d6fb42f496c6053598907ce2cbb0b6536a25d201
dir: /sys/src/ape/lib/ap/gen/toupper.c/

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#include	<ctype.h>

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');
}