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Diffstat (limited to 'man3/csqrt.3')
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diff --git a/man3/csqrt.3 b/man3/csqrt.3 new file mode 100644 index 000000000..f3629d1ab --- /dev/null +++ b/man3/csqrt.3 @@ -0,0 +1,29 @@ +.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) +.\" Distributed under GPL +.\" +.TH CSQRT 3 2002-07-28 "" "complex math routines" +.SH NAME +csqrt, csqrtf, csqrtl \- complex square root +.SH SYNOPSIS +.B #include <complex.h> +.sp +.BI "double complex csqrt(double complex " z ");" +.sp +.BI "float complex csqrtf(float complex " z ");" +.sp +.BI "long double complex csqrtl(long double complex " z ");" +.sp +Link with \-lm. +.SH DESCRIPTION +Calculate the square root of a given complex number, +with nonnegative real part, and +with a branch cut along the negative real axis. +(That means that csqrt(-1+eps*I) will be close to I while +csqrt(-1-eps*I) will be close to -I, if eps is a small positive +real number.) +.SH "CONFORMING TO" +C99 +.SH "SEE ALSO" +.BR cabs (3), +.BR cexp (3), +.BR complex (5) |