man3/cbrt.3

   1 .\" Copyright 1995 Jim Van Zandt <jrv@vanzandt.mv.com>
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  22 .\"
  23 .\" changed `square root' into `cube root' - aeb, 950919
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  25 .\" Modified 2002-07-27 Walter Harms
  26 .\" (walter.harms@informatik.uni-oldenburg.de)
  27 .\"
  28 .TH CBRT 3  2002-27-07 "GNU"  "Linux Programmer's Manual"
  29 .SH NAME
  30 cbrt, cbrtf, cbrtl \- cube root function
  31 .SH SYNOPSIS
  32 .nf
  33 .B #include <math.h>
  34 .sp
  35 .BI "double cbrt(double " x );
  36 .br
  37 .BI "float cbrtf(float " x );
  38 .br
  39 .BI "long double cbrtl(long double " x );
  40 .fi
  41 .sp
  42 Link with \-lm.
  43 .SH DESCRIPTION
  44 The \fBcbrt\fP() function returns the (real) cube root of \fIx\fP.
  45 This function cannot fail; every representable real value has a
  46 representable real cube root.
  47 .SH "CONFORMING TO"
  48 .BR cbrt ()
  49 was a GNU extension. It is now a C99 requirement.
  50 .SH "SEE ALSO"
  51 .BR pow (3),
  52 .BR sqrt (3)