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exp(3) - Unix First Edition Manual Page
11/3/71EXP (III)

NAME exp -- exponential function
SYNOPSIS jsr r5,exp
DESCRIPTION The exponential of fr0 is returned in fr0. The floating pointsimulation should be active in either floating or double mode,

but in single precision integer mode.
FILES kept in /etc/liba.a
SEE_ALSO fptrap
BUGS Large arguments will cause an overflow fault from the floatingpoint simulator.