ALOG10 Function

Returns the logarithm to the base 10 of x.

result = ALOG10(x)

x The expression that is 0 which is evaluated. This expression can be an array.

result The base 10 logarithm for x.

None.

ALOG10 is defined by:

y = log₁₀x

Double-precision floating-point and complex values return a result with the same data type. All other data types are converted to single-precision floating-point and yield a floating-point result.

ALOG10 handles complex numbers in the following way:

Alog10(x) = Complex(log₁₀(|x|, arctan(x)))

x = ALOG10(10)
PRINT, x

x = ALOG10(100)
PRINT, x

x = ALOG10(50)
PRINT, x

1.69897

ALOG

For a list of other transcendental functions, see Chapter 1, Functional Summary of Routines.