Watch-window expressions

Generate paste-ready watch expressions for Visual Studio, VS Code, or GDB / LLDB. Enter your fixed-point variable names, pick a Word width and Q-factor (or E), and copy the generated block into your debugger's watch panel — each variable then displays as its real-valued (float) interpretation while paused.

Direction

Data type

Q (fractional bits)

E (integer bits)

Cast type style

Also show hex

Variable names

What you get

Fixed → Float: each variable becomes varname / 2^Q.0 so the watch panel shows the real-valued interpretation of a Qn integer.
Float → Fixed: each variable becomes a cast expression (intN_t)((varname) · 2^Q) with a half-away-from-zero rounding term, so the watch panel shows the bit pattern that would be stored in your fixed-point port.
Hex sibling (optional): adds a second line per variable that uses the debugger's hex format specifier (,x in Visual Studio, /x in GDB) so you can see the raw two's-complement representation alongside.

Notes per debugger

Visual Studio: paste each line into a separate slot in the Watch panel. Format specifiers like ,g (general float), ,d (decimal int), ,x (hex) follow a comma at the end.
VS Code (cppdbg): same expression syntax as Visual Studio. Add via "+ Watch" or paste into launch.json under "watch".
GDB / LLDB: use as display var/2^Q or watch var; for explicit hex use print/x var.

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