EXPONENT

EXPONENT returns a FIXED BINARY(31,0) value that is the exponent part of x.

Read syntax diagramSkip visual syntax diagramEXPONENT( x)
x
Expression. x must be declared as REAL FLOAT.
EXPONENT(x) is not the mathematical exponent of x. If x = 0, EXPONENT(x) = 0. For other values of x, EXPONENT(x) is the unique number e such that:
Consequently, EXPONENT(1e0) equals 1 and not 0.