Natural logarithm.
Class
Elemental function
Result Type and Attributes
Same as X.
Result Value
If the argument type is complex, the result is the principal value of the imaginary part &omega. in the range -&pi. < &omega. <= &pi.. If the real part of the argument is less than zero and its imaginary part is zero, the imaginary part of the result approximates &pi..
Examples
LOG (10.0) has the value 2.3025851 (approximately).
Specific Name | Argument Type | Result Type | Pass As Arg? |
---|---|---|---|
ALOG | default real | default real | yes |
DLOG | double precision real | double precision real | yes |
QLOG | REAL(16) | REAL(16) | yes (1) |
CLOG | default complex | default complex | yes |
CDLOG | double complex | double complex | yes (1) |
ZLOG | double complex | double complex | yes (1) |
CQLOG | COMPLEX(16) | COMPLEX(16) | yes (1) |
Notes: