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31 lines
954 B
Fortran
31 lines
954 B
Fortran
*DECK CLOG10
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COMPLEX FUNCTION CLOG10 (Z)
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C***BEGIN PROLOGUE CLOG10
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C***PURPOSE Compute the principal value of the complex base 10
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C logarithm.
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C***LIBRARY SLATEC (FNLIB)
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C***CATEGORY C4B
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C***TYPE COMPLEX (CLOG10-C)
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C***KEYWORDS BASE TEN LOGARITHM, ELEMENTARY FUNCTIONS, FNLIB
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C***AUTHOR Fullerton, W., (LANL)
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C***DESCRIPTION
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C
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C CLOG10(Z) calculates the principal value of the complex common
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C or base 10 logarithm of Z for -PI .LT. arg(Z) .LE. +PI.
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C
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C***REFERENCES (NONE)
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C***ROUTINES CALLED (NONE)
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C***REVISION HISTORY (YYMMDD)
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C 770401 DATE WRITTEN
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C 890531 Changed all specific intrinsics to generic. (WRB)
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C 890531 REVISION DATE from Version 3.2
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C 891214 Prologue converted to Version 4.0 format. (BAB)
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C***END PROLOGUE CLOG10
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COMPLEX Z
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SAVE ALOGE
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DATA ALOGE / 0.4342944819 0325182765E0 /
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C***FIRST EXECUTABLE STATEMENT CLOG10
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CLOG10 = ALOGE * LOG(Z)
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C
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RETURN
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END
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