shithub: mc

ref: 3ecd5cbac39da3cc30cc1c7abd514968fca069a9
dir: /lib/std/putint.myr/

use "assert"
use "types"

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

generic putle64	= {buf, v;	-> putle(buf, v castto(uint64), 8)}
generic putbe64	= {buf, v;	-> putbe(buf, v castto(uint64), 8)}
generic putle32	= {buf, v;	-> putle(buf, v castto(uint64), 4)}
generic putbe32	= {buf, v;	-> putbe(buf, v castto(uint64), 4)}
generic putle16	= {buf, v;	-> putle(buf, v castto(uint64), 2)}
generic putbe16	= {buf, v;	-> putbe(buf, v castto(uint64), 2)}
generic putle8	= {buf, v;	-> putle(buf, v castto(uint64), 1)}
generic putbe8	= {buf, v;	-> putbe(buf, v castto(uint64), 1)}

const putbe = {buf, val, n
	var k
	
	assert(buf.len >= n, "buffer too small")
	for var i = 0; i < n; i++
		k = val >> (8*(n-i-1))
		buf[i] = (k & 0xff) castto(byte)
	;;
	-> n castto(size)
}

const putle = {buf, val, n
	assert(buf.len >= n, "buffer too small")
	for var i = 0; i < n; i++
		buf[i] = (val & 0xff) castto(byte)
		val >>= 8
	;;
	-> n castto(size)
}