DSTORF 3 "10 June 2000" "Version 1.00"

Table of contents


NAME

dstorf - Double-precision store and return x

SYNOPSIS

Fortran (77, 90, 95, HPF):
f77 [ flags ] file(s) ... -L/usr/local/lib -lgjl
DOUBLE PRECISION FUNCTION dstorf(x)
DOUBLE PRECISION    x
C (K&R, 89, 99), C++ (98):
cc [ flags ] -I/usr/local/include file(s) ... -L/usr/local/lib -lgjl
Use
#include <gampsi.h>
to get this prototype:
fortran_double_precision dstorf(const fortran_double_precision * x_);

NB: The definition of C/C++ data types fortran_ xxx, and the mapping of Fortran external names to C/C++ external names, is handled by the C/C++ header file. That way, the same function or subroutine name can be used in C, C++, and Fortran code, independent of compiler conventions for mangling of external names in these programming languages.

Last code modification: 10-Jun-2000


DESCRIPTION

Store and return x, to force a variable into memory.

This action is necessary on some architectures to force an expression to be converted to storage precision, when it might otherwise be held in a machine register at higher internal precision.


SEE ALSO

astore(3), astorf(3), dstore(3), qstore(3), qstorf(3).

AUTHORS

The algorithms and code are described in detail in the paper
Algorithm xxx: Quadruple-Precision Gamma(x) and psi(x) Functions for Real Arguments
in ACM Transactions on Mathematical Software, Volume ??, Number ??, Pages ????--???? and ????--????, 2001, by
Nelson H. F. Beebe
Center for Scientific Computing
University of Utah
Department of Mathematics, 110 LCB
155 S 1400 E RM 233
Salt Lake City, UT 84112-0090
Tel: +1 801 581 5254
FAX: +1 801 581 4148
Email: beebe@math.utah.edu, beebe@acm.org, beebe@computer.org
WWW URL: http://www.math.utah.edu/~beebe
and
James S. Ball
University of Utah
Department of Physics
Salt Lake City, UT 84112-0830
USA
Tel: +1 801 581 8397
FAX: +1 801 581 6256
Email: ball@physics.utah.edu
WWW URL: http://www.physics.utah.edu/people/faculty/ball.html