How to use Application.MathCoprocessorAvailable in the xlwings API way

The Application.MathCoprocessorAvailable property in Excel’s object model is a read-only property that returns a Boolean value indicating whether a math coprocessor is available on the user’s computer. Historically, math coprocessors (or floating-point units) were separate processors that accelerated mathematical calculations. In modern systems, this functionality is integrated directly into the central processing unit (CPU). Therefore, this property primarily serves for backward compatibility and system diagnostics. In practical terms, for most contemporary development, this property will return True, as virtually all modern CPUs include integrated floating-point capabilities. However, it can still be useful in rare scenarios for checking the computational environment, perhaps for legacy application support or detailed system reporting.

In the xlwings library, which provides a Pythonic interface to automate Excel, you access this property through the Application object. The xlwings API closely mirrors the Excel Object Model, making the transition from VBA documentation straightforward.

Syntax in xlwings:

app.math_coprocessor_available

or, using the more explicit attribute name that matches the VBA naming convention:

app.MathCoprocessorAvailable

Both properties are accessible and return a Boolean (bool) value. No parameters are required or accepted for this property.

Important Note on Naming: xlwings typically converts VBA’s PascalCase property names to snake_case in Python (e.g., MathCoprocessorAvailable becomes math_coprocessor_available). However, for compatibility and clarity, xlwings often provides both naming styles. It is generally recommended to use the snake_case version for consistency with Python conventions.

Code Examples:

1. Basic Check and Print:
   This example simply checks for the coprocessor and prints its status to the console.

import xlwings as xw

# Connect to the active Excel instance or start a new one
app = xw.apps.active

# Access the property
coprocessor_status = app.math_coprocessor_available

# Print the result
print(f"Math Coprocessor Available: {coprocessor_status}")
# Output will typically be: Math Coprocessor Available: True

2. Conditional Logic Based on Availability:
   This example demonstrates how you might use the property to branch logic, perhaps to choose between calculation methods (though this is largely historical).

import xlwings as xw

app = xw.apps.active

if app.math_coprocessor_available:
    print("System has a math coprocessor. Using optimized calculation routines.")
    # Placeholder for code that uses hardware-accelerated math
    # For example, triggering a complex recalculation
    app.calculation = 'automatic'
else:
    print("No math coprocessor detected. Using standard calculation methods.")
    # Placeholder for code that uses simpler, less intensive calculations
    app.calculation = 'manual'
    # Potentially implement iterative calculation with lower precision

3. System Information Report:
   This example collects the property as part of a broader system diagnostic report written back into an Excel workbook.

import xlwings as xw
from datetime import datetime

# Start a new Excel instance and create a workbook
app = xw.App(visible=True)
wb = app.books.add()
sheet = wb.sheets['Sheet1']

# Gather system info
info = {
"Report Generated": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
"Excel Version": app.version,
"Math Coprocessor Available": app.math_coprocessor_available,
"Operating System": app.operating_system
}

# Write the information to the worksheet
sheet.range('A1').value = [[key, str(value)] for key, value in info.items()]

print("System information report created.")