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Diffstat (limited to 'gsl-1.9/doc/specfunc-elementary.texi')
| -rw-r--r-- | gsl-1.9/doc/specfunc-elementary.texi | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gsl-1.9/doc/specfunc-elementary.texi b/gsl-1.9/doc/specfunc-elementary.texi new file mode 100644 index 0000000..6d6f92a --- /dev/null +++ b/gsl-1.9/doc/specfunc-elementary.texi @@ -0,0 +1,23 @@ +@cindex elementary operations +@cindex multiplication + +The following functions allow for the propagation of errors when +combining quantities by multiplication. The functions are declared in +the header file @file{gsl_sf_elementary.h}. + +@comment @deftypefun double gsl_sf_multiply (double @var{x}, double @var{y}) +@deftypefun int gsl_sf_multiply_e (double @var{x}, double @var{y}, gsl_sf_result * @var{result}) +This function multiplies @var{x} and @var{y} storing the product and its +associated error in @var{result}. +@comment Exceptional Return Values: GSL_EOVRFLW, GSL_EUNDRFLW +@end deftypefun + + +@deftypefun int gsl_sf_multiply_err_e (double @var{x}, double @var{dx}, double @var{y}, double @var{dy}, gsl_sf_result * @var{result}) +This function multiplies @var{x} and @var{y} with associated absolute +errors @var{dx} and @var{dy}. The product +@c{$xy \pm xy \sqrt{(dx/x)^2 +(dy/y)^2}$} +@math{xy +/- xy \sqrt((dx/x)^2 +(dy/y)^2)} +is stored in @var{result}. +@comment Exceptional Return Values: GSL_EOVRFLW, GSL_EUNDRFLW +@end deftypefun |