541
3. Instructions
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Double-precision Floating-point Instructions
3
EXPD
Function
EXPD(858) calculates the natural (base e) exponential of the double-precision (64-bit) floating-point
number in words S to S+3 and places the result in words D to D+3. In other words, EXP(467) calculates
ex (x = source) and places the result in words D to D+3.
• The constant e is 2.718282.
The following diagram shows the relationship between the input data and result.
S+1 S
→
S+3 S+2
D+1 DD+3 D+2
e
R
S: Input data
R: Result
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