5 type Fn_flt__flt = struct
6 f32 : (f : flt32 -> flt32)
7 f64 : (f : flt64 -> flt64)
10 type Fn_flt_flt_flt__flt = struct
11 f32 : (f1 : flt32, f2 : flt32, f3 : flt32 -> flt32)
12 f64 : (f1 : flt64, f2 : flt64, f3 : flt64 -> flt64)
19 `Flt_flt_flt__flt Fn_flt_flt_flt__flt
28 var available_fns : fn_desc[:] = [][:]
30 generic id : (a : @a -> @a) = {x; -> x}
32 const main = {args : byte[:][:]
34 [.name = "id", .f = `Flt__flt [ .f32 = id, .f64 = id]],
35 [.name = "trunc", .f = `Flt__flt [ .f32 = math.trunc, .f64 = math.trunc]],
36 [.name = "floor", .f = `Flt__flt [ .f32 = math.floor, .f64 = math.floor]],
37 [.name = "ceil", .f = `Flt__flt [ .f32 = math.ceil, .f64 = math.ceil]],
38 [.name = "fma", .f = `Flt_flt_flt__flt [ .f32 = math.fma, .f64 = math.fma]],
39 [.name = "sqrt", .f = `Flt__flt [ .f32 = math.sqrt, .f64 = math.sqrt]],
42 var p : flt_prec = `Single
43 var f : fn_desc = available_fns[0]
46 (p, f, n) = read_args(args)
51 const read_args = {args : byte[:][:]
52 var p : flt_prec = `Single
54 var fname : byte[:] = ""
55 var fn : fn_desc = available_fns[0]
56 var cmd = std.optparse(args, &[
59 [.opt = 's', .desc = "use single precision (default)"],
60 [.opt = 'd', .desc = "use double precision"],
61 [.opt = 'n', .arg = "N", .desc = "read/write ‘N’ entries at a time"],
62 [.opt = 'f', .arg = "func", .desc = "use function ‘f’"],
68 | ('s', _): p = `Single
69 | ('d', _): p = `Double
71 match std.intparse(ns)
72 | `std.Some np: n = np
74 std.put("impl-myrddin: unparsable number “{}”\n", ns)
77 | ('f', fs): fname = fs
78 | _ : std.die("impl-myrddin: impossible\n")
82 var good_fn : bool = false
84 if std.eq(f.name, fname)
92 std.put("impl-myrddin: unknown function “{}”\n", fname)
97 std.put("impl-myrddin: positive number of entries required\n")
105 const io_loop = {p : flt_prec, fn : fn_desc, n : std.size
106 var input_sz : std.size = 0
107 var output_sz : std.size = 0
108 var in_buf : byte[:] = [][:]
109 var out_buf : byte[:] = [][:]
110 var w = prec_width(p)
112 (input_sz, output_sz) = io_widths(p, fn)
114 if (((input_sz * n) / input_sz) != n) || (((output_sz * n) / output_sz) != n)
115 std.put("impl-myrddin: overflow in i/o buffer size\n")
119 in_buf = std.slalloc(input_sz * n)
120 out_buf = std.slalloc(output_sz * n)
123 match std.readall(0, in_buf)
126 std.put("impl-myrddin: std.readall(): {}\n", e)
131 | (`Single, `Flt__flt f):
132 for var j = 0; j < n; ++j
133 var ib : byte[:] = in_buf[j * w:(j + 1) * w]
134 var ob : byte[:] = out_buf[j * w:(j + 1) * w]
135 var x : flt32 = std.flt32frombits(std.getle32(ib))
136 std.putle32(ob, std.flt32bits(f.f32(x)))
138 | (`Double, `Flt__flt f):
139 for var j = 0; j < n; ++j
140 var ib : byte[:] = in_buf[j * w:(j + 1) * w]
141 var ob : byte[:] = out_buf[j * w:(j + 1) * w]
142 var x : flt64 = std.flt64frombits(std.getle64(ib))
143 std.putle64(ob, std.flt64bits(f.f64(x)))
145 | (`Single, `Flt_flt_flt__flt f):
146 for var j = 0; j < n; ++j
147 var ib : byte[:] = in_buf[j * 3 * w:(j + 1) * 3 * w]
148 var ob : byte[:] = out_buf[j * w:(j + 1) * w]
149 var x1 : flt32 = std.flt32frombits(std.getle32(ib[0: 4]))
150 var x2 : flt32 = std.flt32frombits(std.getle32(ib[4: 8]))
151 var x3 : flt32 = std.flt32frombits(std.getle32(ib[8:12]))
152 std.putle32(ob, std.flt32bits(f.f32(x1, x2, x3)))
154 | (`Double, `Flt_flt_flt__flt f):
155 for var j = 0; j < n; ++j
156 var ib : byte[:] = in_buf[j * 3 * w:(j + 1) * 3 * w]
157 var ob : byte[:] = out_buf[j * w:(j + 1) * w]
158 var x1 : flt64 = std.flt64frombits(std.getle64(ib[ 0: 8]))
159 var x2 : flt64 = std.flt64frombits(std.getle64(ib[ 8:16]))
160 var x3 : flt64 = std.flt64frombits(std.getle64(ib[16:24]))
161 std.putle64(ob, std.flt64bits(f.f64(x1, x2, x3)))
165 match std.writeall(1, out_buf)
168 std.put("impl-myrddin: std.writeall(): {}\n", e)
174 const prec_width = {p : flt_prec
181 const io_widths = {p : flt_prec, fn : fn_desc
182 var w : std.size = prec_width(p)
185 | `Flt__flt _ : -> (w, w)
186 | `Flt_flt_flt__flt _ : -> (3*w, w)