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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-03-04 21:21:30 -0500 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-03-04 21:21:30 -0500 |
| commit | d54fe7c1f704a63824c5bfa0ece65245572e9b27 (patch) | |
| tree | afc52015ffc2c74e0266653eecef1c8ef8ba5d91 /src/slalib/dranrm.f | |
| download | calfuse-d54fe7c1f704a63824c5bfa0ece65245572e9b27.tar.gz | |
Initial commit
Diffstat (limited to 'src/slalib/dranrm.f')
| -rw-r--r-- | src/slalib/dranrm.f | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/slalib/dranrm.f b/src/slalib/dranrm.f new file mode 100644 index 0000000..ee9af25 --- /dev/null +++ b/src/slalib/dranrm.f @@ -0,0 +1,31 @@ + DOUBLE PRECISION FUNCTION sla_DRANRM (ANGLE) +*+ +* - - - - - - - +* D R A N R M +* - - - - - - - +* +* Normalize angle into range 0-2 pi (double precision) +* +* Given: +* ANGLE dp the angle in radians +* +* The result is ANGLE expressed in the range 0-2 pi (double +* precision). +* +* P.T.Wallace Starlink 23 November 1995 +* +* Copyright (C) 1995 Rutherford Appleton Laboratory +*- + + IMPLICIT NONE + + DOUBLE PRECISION ANGLE + + DOUBLE PRECISION D2PI + PARAMETER (D2PI=6.283185307179586476925286766559D0) + + + sla_DRANRM=MOD(ANGLE,D2PI) + IF (sla_DRANRM.LT.0D0) sla_DRANRM=sla_DRANRM+D2PI + + END |