shithub: mc

ref: b5bfee96de8a7fae9bdda140f630bea0b5997737
dir: /lib/std/putint.myr/

use "die"
use "memops"
use "types"

pkg std =
	generic puthost64	: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic putle64		: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic putbe64		: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic puthost32	: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic putle32		: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic putbe32		: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic puthost16	: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic putle16		: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic putbe16		: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic puthost8	: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic putle8		: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
	generic putbe8		: (buf : byte[:], v :  @a -> size) :: numeric,integral @a
;;

generic puthost = {buf, val : @a :: integral, numeric @a
	iassert(buf.len >= sizeof(@a), "buffer too small")
	memblit((buf : byte#), (&val : byte#), sizeof(@a))
	-> sizeof(@a)
}

generic puthost64	= {buf, v;	-> puthost(buf, (v : uint64))}
generic putle64		= {buf, v;	-> putle(buf, (v : uint64), 8)}
generic putbe64		= {buf, v;	-> putbe(buf, (v : uint64), 8)}
generic puthost32	= {buf, v;	-> puthost(buf, (v : uint32))}
generic putle32		= {buf, v;	-> putle(buf, (v : uint64), 4)}
generic putbe32		= {buf, v;	-> putbe(buf, (v : uint64), 4)}
generic puthost16	= {buf, v;	-> puthost(buf, (v : uint16))}
generic putle16		= {buf, v;	-> putle(buf, (v : uint64), 2)}
generic putbe16		= {buf, v;	-> putbe(buf, (v : uint64), 2)}
generic puthost8	= {buf, v;	-> puthost(buf, (v : uint8))}
generic putle8		= {buf, v;	-> putle(buf, (v : uint64), 1)}
generic putbe8		= {buf, v;	-> putbe(buf, (v : uint64), 1)}

const putbe = {buf, val, n
	var k
	
	for var i = 0; i < n; i++
		k = val >> (8*(n-i-1))
		buf[i] = (k & 0xff: byte)
	;;
	-> (n : size)
}

const putle = {buf, val, n
	for var i = 0; i < n; i++
		buf[i] = (val & 0xff : byte)
		val >>= 8
	;;
	-> (n : size)
}