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Diffstat (limited to 'man3/creal.3')
| -rw-r--r-- | man3/creal.3 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/man3/creal.3 b/man3/creal.3 new file mode 100644 index 000000000..35986d3fd --- /dev/null +++ b/man3/creal.3 @@ -0,0 +1,28 @@ +.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) +.\" Distributed under GPL +.\" +.TH CREAL 3 2002-07-28 "" "complex math routines" +.SH NAME +creal, crealf, creall \- get real part of a complex number +.SH SYNOPSIS +.B #include <complex.h> +.sp +.BI "double creal(double complex " z ); +.sp +.BI "float crealf(float complex " z ); +.sp +.BI "long double creall(long double complex " z ); +.sp +Link with \-lm. +.SH DESCRIPTION +The creal() function returns the real part of the complex number z. +.LP +One has z = creal(z) + I*cimag(z). +.SH NOTE +The gcc supports also __real__. That is a GNU extension. +.SH "CONFORMING TO" +C99 +.SH "SEE ALSO" +.BR cabs (3), +.BR cimag (3), +.BR complex (5) |