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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <gset.h>
include "gks.h"
# GQCHUP -- Inquire character up vector.
procedure gqchup (ierror, chupx, chupy)
int ierror # Error code; ierror = 0 for no error
real chupx, chupy # Character up vector x and y components
int angle
real txup
int gstati()
include "gks.com"
begin
if (gk_std == NULL) {
# GKS not in proper state; no active workstations
ierror = 7
chupx = 0.0
chupy = 0.0
return
} else
ierror = 0
iferr {
angle = gstati (gp[gk_std], G_TXUP)
txup = real (angle) * 3.1415926 / 180.
chupx = cos (txup)
chupy = sin (txup)
} then {
ierror = 1
chupx = 0.0
chupy = 0.0
}
end
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