!-------------------------------------- LICENCE BEGIN ------------------------------------
!Environment Canada - Atmospheric Science and Technology License/Disclaimer, 
!                     version 3; Last Modified: May 7, 2008.
!This is free but copyrighted software; you can use/redistribute/modify it under the terms 
!of the Environment Canada - Atmospheric Science and Technology License/Disclaimer 
!version 3 or (at your option) any later version that should be found at: 
!http://collaboration.cmc.ec.gc.ca/science/rpn.comm/license.html 
!
!This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
!without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
!See the above mentioned License/Disclaimer for more details.
!You should have received a copy of the License/Disclaimer along with this software; 
!if not, you can write to: EC-RPN COMM Group, 2121 TransCanada, suite 500, Dorval (Quebec), 
!CANADA, H9P 1J3; or send e-mail to service.rpn@ec.gc.ca
!-------------------------------------- LICENCE END --------------------------------------
***FONCTION SHUAHR  -  PASSAGE DE HU A HR
*

      FUNCTION SHUAHR(HU,TX,PX,LNPS,MODP,SWTT,SWPH) 1,2
#include "impnone.cdk"
      REAL SHUAHR, HU, TX, PX, LNPS
      INTEGER MODP
      LOGICAL SWTT, SWPH
*
*Author
*          N. Brunet  (Jan91)
*
*Object
*          to return relative humidity(fraction) calculated from
*          specific humidity, temperature and pressure
*
*Arguments
*
*          - Input -
* HU       specific humidity in kg/kg
* TX       temperature or virtual temperature in Kelvins
* PX       see MODP
* LNPS     see MODP
* MODP     pressure mode(SI units only):
*          =0; pressure level in PX
*          =1; sigma level in PX and PS(surface pressure) in LNPS
*          =2; sigma level in PX and logarithm of sigma level in
*          LNPS
*          =3; all points of pressure in LNPS(NI,*) in Pascals
*          =4; sigma level in PX and logarithm of sigma level in
*          LNPS(in millibars unless using SI units)
*          =5; logarithm of pressure level in PX(in millibars unless
*          using SI units)
* SWTT     .TRUE. to pass TT for argument
*          .FALSE. to pass TV for argument
* SWPH     .TRUE. to consider water and ice phase
*          .FALSE. to consider water phase only
*
*
*IMPLICITES
#include "consphy.cdk"
*MODULES
      EXTERNAL INCTPHY
*
**
*--------------------------------------------------------------------
      REAL TP, PN
*
#include "dintern.cdk"
#include "fintern.cdk"
*--------------------------------------------------------------------
#include "initcph.cdk"
*
#include "modpr1.cdk"
#include "modtp1.cdk"
      IF(SWPH)THEN
         SHUAHR = FOHR(HU,TP,PN)
      ELSE
         SHUAHR = FOHRA(HU,TP,PN)
      END IF
*
      RETURN
      CONTAINS
#include "fintern90.cdk"
      END