feat: add float/double support for WriteNoAlloc and WriteLineNoAlloc

X10D.Tests/src/IO/TextWriterTests.Double.cs

@@ -0,0 +1,131 @@
+using System.Globalization;
+using System.Text;
+using NUnit.Framework;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+public partial class TextWriterTests
+{
+    [Test]
+    public void WriteNoAlloc_ShouldThrowArgumentNullException_GivenDouble_AndNullWriter()
+    {
+        TextWriter writer = null!;
+        Assert.Throws<ArgumentNullException>(() => writer.WriteNoAlloc(420.0));
+        Assert.Throws<ArgumentNullException>(() => writer.WriteNoAlloc(420.0, "N0"));
+        Assert.Throws<ArgumentNullException>(() => writer.WriteNoAlloc(420.0, "N0", null));
+    }
+
+    [Test]
+    public void WriteNoAlloc_ShouldThrowObjectDisposedException_GivenDouble_AndDisposedStream()
+    {
+        var stream = new MemoryStream();
+        var writer = new StreamWriter(stream, Encoding.UTF8);
+        writer.Dispose();
+        stream.Dispose();
+
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteNoAlloc(420.0));
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteNoAlloc(420.0, "N0"));
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteNoAlloc(420.0, "N0", null));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldThrowArgumentNullException_GivenDouble_AndNullWriter()
+    {
+        TextWriter writer = null!;
+        Assert.Throws<ArgumentNullException>(() => writer.WriteLineNoAlloc(420.0));
+        Assert.Throws<ArgumentNullException>(() => writer.WriteLineNoAlloc(420.0, "N0"));
+        Assert.Throws<ArgumentNullException>(() => writer.WriteLineNoAlloc(420.0, "N0", null));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldThrowObjectDisposedException_GivenDouble_AndDisposedStream()
+    {
+        var stream = new MemoryStream();
+        var writer = new StreamWriter(stream, Encoding.UTF8);
+        writer.Dispose();
+        stream.Dispose();
+
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteLineNoAlloc(420.0));
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteLineNoAlloc(420.0, "N0"));
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteLineNoAlloc(420.0, "N0", null));
+    }
+
+    [Test]
+    public void WriteNoAlloc_ShouldWriteTextValue_GivenDouble()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteNoAlloc(420.0);
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        const string expected = "420";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteNoAlloc_ShouldWriteTextValue_GivenDouble_AndFormatString()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteNoAlloc(420.0, "N0");
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        const string expected = "420";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteNoAlloc_ShouldWriteTextValue_GivenDouble_AndFormatString_AndCultureInfo()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteNoAlloc(420.0, "N0", CultureInfo.CurrentCulture);
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        const string expected = "420";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldWriteTextValue_GivenDouble()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteLineNoAlloc(420.0);
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        var expected = $"420{Environment.NewLine}";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldWriteTextValue_GivenDouble_AndFormatString()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteLineNoAlloc(420.0, "N0");
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        var expected = $"420{Environment.NewLine}";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldWriteTextValue_GivenDouble_AndFormatString_AndCultureInfo()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteLineNoAlloc(420.0, "N0", CultureInfo.CurrentCulture);
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        var expected = $"420{Environment.NewLine}";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+}

X10D.Tests/src/IO/TextWriterTests.Single.cs

@@ -0,0 +1,131 @@
+using System.Globalization;
+using System.Text;
+using NUnit.Framework;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+public partial class TextWriterTests
+{
+    [Test]
+    public void WriteNoAlloc_ShouldThrowArgumentNullException_GivenSingle_AndNullWriter()
+    {
+        TextWriter writer = null!;
+        Assert.Throws<ArgumentNullException>(() => writer.WriteNoAlloc(420.0f));
+        Assert.Throws<ArgumentNullException>(() => writer.WriteNoAlloc(420.0f, "N0"));
+        Assert.Throws<ArgumentNullException>(() => writer.WriteNoAlloc(420.0f, "N0", null));
+    }
+
+    [Test]
+    public void WriteNoAlloc_ShouldThrowObjectDisposedException_GivenSingle_AndDisposedStream()
+    {
+        var stream = new MemoryStream();
+        var writer = new StreamWriter(stream, Encoding.UTF8);
+        writer.Dispose();
+        stream.Dispose();
+
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteNoAlloc(420.0f));
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteNoAlloc(420.0f, "N0"));
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteNoAlloc(420.0f, "N0", null));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldThrowArgumentNullException_GivenSingle_AndNullWriter()
+    {
+        TextWriter writer = null!;
+        Assert.Throws<ArgumentNullException>(() => writer.WriteLineNoAlloc(420.0f));
+        Assert.Throws<ArgumentNullException>(() => writer.WriteLineNoAlloc(420.0f, "N0"));
+        Assert.Throws<ArgumentNullException>(() => writer.WriteLineNoAlloc(420.0f, "N0", null));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldThrowObjectDisposedException_GivenSingle_AndDisposedStream()
+    {
+        var stream = new MemoryStream();
+        var writer = new StreamWriter(stream, Encoding.UTF8);
+        writer.Dispose();
+        stream.Dispose();
+
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteLineNoAlloc(420.0f));
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteLineNoAlloc(420.0f, "N0"));
+        Assert.Throws<ObjectDisposedException>(() => writer.WriteLineNoAlloc(420.0f, "N0", null));
+    }
+
+    [Test]
+    public void WriteNoAlloc_ShouldWriteTextValue_GivenSingle()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteNoAlloc(420.0f);
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        const string expected = "420";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteNoAlloc_ShouldWriteTextValue_GivenSingle_AndFormatString()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteNoAlloc(420.0f, "N0");
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        const string expected = "420";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteNoAlloc_ShouldWriteTextValue_GivenSingle_AndFormatString_AndCultureInfo()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteNoAlloc(420.0f, "N0", CultureInfo.CurrentCulture);
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        const string expected = "420";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldWriteTextValue_GivenSingle()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteLineNoAlloc(420.0f);
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        var expected = $"420{Environment.NewLine}";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldWriteTextValue_GivenSingle_AndFormatString()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteLineNoAlloc(420.0f, "N0");
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        var expected = $"420{Environment.NewLine}";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+
+    [Test]
+    public void WriteLineNoAlloc_ShouldWriteTextValue_GivenSingle_AndFormatString_AndCultureInfo()
+    {
+        Assert.That(_stream.Length, Is.Zero);
+        _writer.WriteLineNoAlloc(420.0f, "N0", CultureInfo.CurrentCulture);
+        _writer.Flush();
+
+        string actual = Encoding.UTF8.GetString(_stream.ToArray());
+        var expected = $"420{Environment.NewLine}";
+
+        Assert.That(actual, Is.EqualTo(expected));
+    }
+}

X10D/src/IO/TextWriterExtensions.WriteLineNoAlloc.Double.cs

@@ -0,0 +1,83 @@
+using System.Globalization;
+
+namespace X10D.IO;
+
+public static partial class TextWriterExtensions
+{
+    /// <summary>
+    ///     Writes the text representation of an 8-byte floating-point value to the text stream, followed by a line terminator,
+    ///     without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 8-byte floating-point value to write.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteLineNoAlloc(this TextWriter writer, double value)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        writer.WriteLineNoAlloc(value, "N0".AsSpan(), CultureInfo.CurrentCulture);
+    }
+
+    /// <summary>
+    ///     Writes the text representation of an 8-byte floating-point value to the text stream, followed by a line terminator,
+    ///     without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 8-byte floating-point value to write.</param>
+    /// <param name="format">A standard or custom numeric format string.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteLineNoAlloc(this TextWriter writer, double value, ReadOnlySpan<char> format)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        WriteLineNoAlloc(writer, value, format, CultureInfo.CurrentCulture);
+    }
+
+    /// <summary>
+    ///     Writes the text representation of an 8-byte floating-point value to the text stream, followed by a line terminator,
+    ///     without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 8-byte floating-point value to write.</param>
+    /// <param name="format">A standard or custom numeric format string.</param>
+    /// <param name="formatProvider">An object that supplies culture-specific formatting information.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteLineNoAlloc(this TextWriter writer, double value, ReadOnlySpan<char> format,
+        IFormatProvider? formatProvider)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        writer.WriteNoAlloc(value, format, formatProvider);
+        writer.WriteLine();
+    }
+}

X10D/src/IO/TextWriterExtensions.WriteLineNoAlloc.Single.cs

@@ -0,0 +1,83 @@
+using System.Globalization;
+
+namespace X10D.IO;
+
+public static partial class TextWriterExtensions
+{
+    /// <summary>
+    ///     Writes the text representation of a 4-byte floating-point value to the text stream, followed by a line terminator,
+    ///     without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 4-byte floating-point value to write.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteLineNoAlloc(this TextWriter writer, float value)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        writer.WriteLineNoAlloc(value, "N0".AsSpan(), CultureInfo.CurrentCulture);
+    }
+
+    /// <summary>
+    ///     Writes the text representation of a 4-byte floating-point value to the text stream, followed by a line terminator,
+    ///     without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 4-byte floating-point value to write.</param>
+    /// <param name="format">A standard or custom numeric format string.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteLineNoAlloc(this TextWriter writer, float value, ReadOnlySpan<char> format)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        WriteLineNoAlloc(writer, value, format, CultureInfo.CurrentCulture);
+    }
+
+    /// <summary>
+    ///     Writes the text representation of a 4-byte floating-point value to the text stream, followed by a line terminator,
+    ///     without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 4-byte floating-point value to write.</param>
+    /// <param name="format">A standard or custom numeric format string.</param>
+    /// <param name="formatProvider">An object that supplies culture-specific formatting information.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteLineNoAlloc(this TextWriter writer, float value, ReadOnlySpan<char> format,
+        IFormatProvider? formatProvider)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        writer.WriteNoAlloc(value, format, formatProvider);
+        writer.WriteLine();
+    }
+}

X10D/src/IO/TextWriterExtensions.WriteNoAlloc.Double.cs

@@ -0,0 +1,91 @@
+using System.Globalization;
+
+namespace X10D.IO;
+
+public static partial class TextWriterExtensions
+{
+    /// <summary>
+    ///     Writes the text representation of an 8-byte floating-point value to the text stream, without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 8-byte floating-point value to write.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteNoAlloc(this TextWriter writer, double value)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        WriteNoAlloc(writer, value, "N0".AsSpan(), CultureInfo.CurrentCulture);
+    }
+
+    /// <summary>
+    ///     Writes the text representation of an 8-byte floating-point value to the text stream, without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 8-byte floating-point value to write.</param>
+    /// <param name="format">A standard or custom numeric format string.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteNoAlloc(this TextWriter writer, double value, ReadOnlySpan<char> format)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        WriteNoAlloc(writer, value, format, CultureInfo.CurrentCulture);
+    }
+
+    /// <summary>
+    ///     Writes the text representation of an 8-byte floating-point value to the text stream, without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 8-byte floating-point value to write.</param>
+    /// <param name="format">A standard or custom numeric format string.</param>
+    /// <param name="formatProvider">An object that supplies culture-specific formatting information.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteNoAlloc(this TextWriter writer, double value, ReadOnlySpan<char> format,
+        IFormatProvider? formatProvider)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        Span<char> buffer = stackalloc char[100];
+        if (value.TryFormat(buffer, out int charsWritten, format, formatProvider))
+        {
+            Span<char> truncated = buffer[..charsWritten];
+            for (var index = 0; index < truncated.Length; index++)
+            {
+                writer.Write(truncated[index]);
+            }
+        }
+        else
+        {
+            writer.Write(value.ToString(format.ToString(), formatProvider));
+        }
+    }
+}

X10D/src/IO/TextWriterExtensions.WriteNoAlloc.Single.cs

@@ -0,0 +1,91 @@
+using System.Globalization;
+
+namespace X10D.IO;
+
+public static partial class TextWriterExtensions
+{
+    /// <summary>
+    ///     Writes the text representation of a 4-byte floating-point value to the text stream, without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 4-byte floating-point value to write.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteNoAlloc(this TextWriter writer, float value)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        WriteNoAlloc(writer, value, "N0".AsSpan(), CultureInfo.CurrentCulture);
+    }
+
+    /// <summary>
+    ///     Writes the text representation of a 4-byte floating-point value to the text stream, without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 4-byte floating-point value to write.</param>
+    /// <param name="format">A standard or custom numeric format string.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteNoAlloc(this TextWriter writer, float value, ReadOnlySpan<char> format)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        WriteNoAlloc(writer, value, format, CultureInfo.CurrentCulture);
+    }
+
+    /// <summary>
+    ///     Writes the text representation of a 4-byte floating-point value to the text stream, without allocating a string.
+    /// </summary>
+    /// <param name="writer">The <see cref="TextWriter" /> to write to.</param>
+    /// <param name="value">The 4-byte floating-point value to write.</param>
+    /// <param name="format">A standard or custom numeric format string.</param>
+    /// <param name="formatProvider">An object that supplies culture-specific formatting information.</param>
+    /// <remarks>This method may still allocate if the integer is too large to fit in a stack-allocated buffer.</remarks>
+    /// <exception cref="ArgumentNullException"><paramref name="writer" /> is <see langword="null" />.</exception>
+    /// <exception cref="ObjectDisposedException">The <see cref="TextWriter" /> is closed.</exception>
+    /// <exception cref="IOException">An I/O error occurs.</exception>
+    public static void WriteNoAlloc(this TextWriter writer, float value, ReadOnlySpan<char> format,
+        IFormatProvider? formatProvider)
+    {
+#if NET6_0_OR_GREATER
+        ArgumentNullException.ThrowIfNull(writer);
+#else
+        if (writer is null)
+        {
+            throw new ArgumentNullException(nameof(writer));
+        }
+#endif
+
+        Span<char> buffer = stackalloc char[100];
+        if (value.TryFormat(buffer, out int charsWritten, format, formatProvider))
+        {
+            Span<char> truncated = buffer[..charsWritten];
+            for (var index = 0; index < truncated.Length; index++)
+            {
+                writer.Write(truncated[index]);
+            }
+        }
+        else
+        {
+            writer.Write(value.ToString(format.ToString(), formatProvider));
+        }
+    }
+}