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refactor: reduce write calls in float writing functions

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Also using std.mem.writeInt.
This commit is contained in:
CJ van den Berg 2026-03-12 20:18:05 +01:00
parent 30e260bcea
commit be1e1f551e
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 12 additions and 35 deletions
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47
src/cbor.zig
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@ -146,47 +146,24 @@ fn writeU64(writer: *Io.Writer, value: u64) Io.Writer.Error!void {
}
fn writeF16(writer: *Io.Writer, value: f16) Io.Writer.Error!void {
try write(writer, cbor_magic_float16);
const value_bytes = std.mem.asBytes(&value);
switch (native_endian) {
.big => try write(writer, value_bytes),
.little => {
try write(writer, value_bytes[1]);
try write(writer, value_bytes[0]);
},
}
var buf: [3]u8 = undefined;
buf[0] = cbor_magic_float16;
std.mem.writeInt(u16, buf[1..3], @bitCast(value), .big);
_ = try writer.write(&buf);
}
fn writeF32(writer: *Io.Writer, value: f32) Io.Writer.Error!void {
try write(writer, cbor_magic_float32);
const value_bytes = std.mem.asBytes(&value);
switch (native_endian) {
.big => try write(writer, value_bytes),
.little => {
try write(writer, value_bytes[3]);
try write(writer, value_bytes[2]);
try write(writer, value_bytes[1]);
try write(writer, value_bytes[0]);
},
}
var buf: [5]u8 = undefined;
buf[0] = cbor_magic_float32;
std.mem.writeInt(u32, buf[1..5], @bitCast(value), .big);
_ = try writer.write(&buf);
}
fn writeF64(writer: *Io.Writer, value: f64) Io.Writer.Error!void {
try write(writer, cbor_magic_float64);
const value_bytes = std.mem.asBytes(&value);
switch (native_endian) {
.big => try write(writer, value_bytes),
.little => {
try write(writer, value_bytes[7]);
try write(writer, value_bytes[6]);
try write(writer, value_bytes[5]);
try write(writer, value_bytes[4]);
try write(writer, value_bytes[3]);
try write(writer, value_bytes[2]);
try write(writer, value_bytes[1]);
try write(writer, value_bytes[0]);
},
}
var buf: [9]u8 = undefined;
buf[0] = cbor_magic_float64;
std.mem.writeInt(u64, buf[1..9], @bitCast(value), .big);
_ = try writer.write(&buf);
}
fn writeString(writer: *Io.Writer, s: []const u8) Io.Writer.Error!void {