calc-float-format

calc-float-format is a variable defined in `calc.el'.
Its value is

(float 0)

Documentation:
Format to use for display of floating-point numbers in calc-mode.
Must be a list of one of the following forms:
(float 0) Floating point format, display full precision.
(float N) N > 0: Floating point format, at most N significant figures.
(float -N) -N < 0: Floating point format, calc-internal-prec - N figs.
(fix N) N >= 0: Fixed point format, N places after decimal point.
(sci 0) Scientific notation, full precision.
(sci N) N > 0: Scientific notation, N significant figures.
(sci -N) -N < 0: Scientific notation, calc-internal-prec - N figs.
(eng 0) Engineering notation, full precision.
(eng N) N > 0: Engineering notation, N significant figures.
(eng -N) -N < 0: Engineering notation, calc-internal-prec - N figs.