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Diffstat (limited to 'newlib/libm/complex/clog.c')
| -rw-r--r-- | newlib/libm/complex/clog.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/newlib/libm/complex/clog.c b/newlib/libm/complex/clog.c index 838f92dc6..f7ad3d2f7 100644 --- a/newlib/libm/complex/clog.c +++ b/newlib/libm/complex/clog.c @@ -32,6 +32,48 @@ * Marco Atzeri <marco_atzeri@yahoo.it> */ +/* +FUNCTION + <<clog>>, <<clogf>>---complex base-e logarithm + +INDEX + clog +INDEX + clogf + +ANSI_SYNOPSIS + #include <complex.h> + double complex clog(double complex <[z]>); + float complex clogf(float complex <[z]>); + + +DESCRIPTION + These functions compute the complex natural (base-<[e]>) logarithm + of <[z]>, with a branch cut along the negative real axis. + + <<clogf>> is identical to <<clog>>, except that it performs + its calculations on <<floats complex>>. + +RETURNS + @ifnottex + The clog functions return the complex natural logarithm value, in + the range of a strip mathematically unbounded along the real axis + and in the interval [-i*pi , +i*pi] along the imaginary axis. + @end ifnottex + @tex + The clog functions return the complex natural logarithm value, in + the range of a strip mathematically unbounded along the real axis + and in the interval [$-i\pi$, $+i\pi$] along the imaginary axis. + @end tex + +PORTABILITY + <<clog>> and <<clogf>> are ISO C99 + +QUICKREF + <<clog>> and <<clogf>> are ISO C99 + +*/ + #include <complex.h> #include <math.h> |