dos -> unix

1 files changed, 423 insertions, 423 deletions

diff --git a/libX11/src/xcms/uvY.c b/libX11/src/xcms/uvY.c
index a4abc66cd..5344fb17c 100644
--- a/libX11/src/xcms/uvY.c
+++ b/libX11/src/xcms/uvY.c
@@ -1,423 +1,423 @@
-

-/*

- * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc.

- * 	All Rights Reserved

- *

- * This file is a component of an X Window System-specific implementation

- * of XCMS based on the TekColor Color Management System.  Permission is

- * hereby granted to use, copy, modify, sell, and otherwise distribute this

- * software and its documentation for any purpose and without fee, provided

- * that this copyright, permission, and disclaimer notice is reproduced in

- * all copies of this software and in supporting documentation.  TekColor

- * is a trademark of Tektronix, Inc.

- *

- * Tektronix makes no representation about the suitability of this software

- * for any purpose.  It is provided "as is" and with all faults.

- *

- * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE,

- * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

- * PARTICULAR PURPOSE.  IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY

- * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER

- * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF

- * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN

- * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.

- *

- *

- *	NAME

- *		CIEuvy.c

- *

- *	DESCRIPTION

- *		This file contains routines that support the CIE u'v'Y

- *		color space to include conversions to and from the CIE

- *		XYZ space.

- *

- *	DOCUMENTATION

- *		"TekColor Color Management System, System Implementor's Manual"

- */

-

-#ifdef HAVE_CONFIG_H

-#include <config.h>

-#endif

-#include <X11/Xos.h>

-#include "Xlibint.h"

-#include "Xcmsint.h"

-#include "Cv.h"

-

-#include <stdio.h>

-

-/*

- *	FORWARD DECLARATIONS

- */

-static int CIEuvY_ParseString(register char *spec, XcmsColor *pColor);

-

-/*

- *	DEFINES

- *		Internal definitions that need NOT be exported to any package

- *		or program using this package.

- */

-#ifdef DBL_EPSILON

-#  define XMY_DBL_EPSILON DBL_EPSILON

-#else

-#  define XMY_DBL_EPSILON 0.00001

-#endif

-

-

-/*

- *	LOCAL VARIABLES

- */

-

-    /*

-     * NULL terminated list of functions applied to get from CIEuvY to CIEXYZ

-     */

-static XcmsConversionProc Fl_CIEuvY_to_CIEXYZ[] = {

-    XcmsCIEuvYToCIEXYZ,

-    NULL

-};

-

-    /*

-     * NULL terminated list of functions applied to get from CIEXYZ to CIEuvY

-     */

-static XcmsConversionProc Fl_CIEXYZ_to_CIEuvY[] = {

-    XcmsCIEXYZToCIEuvY,

-    NULL

-};

-

-

-/*

- *	GLOBALS

- */

-

-    /*

-     * CIE uvY Color Space

-     */

-XcmsColorSpace	XcmsCIEuvYColorSpace =

-    {

-	_XcmsCIEuvY_prefix,		/* prefix */

-	XcmsCIEuvYFormat,		/* id */

-	CIEuvY_ParseString,	/* parseString */

-	Fl_CIEuvY_to_CIEXYZ,	/* to_CIEXYZ */

-	Fl_CIEXYZ_to_CIEuvY,	/* from_CIEXYZ */

-	1

-    };

-

-

-

-/************************************************************************

- *									*

- *			 PRIVATE ROUTINES				*

- *									*

- ************************************************************************/

-

-/*

- *	NAME

- *		CIEuvY_ParseString

- *

- *	SYNOPSIS

- */

-static int

-CIEuvY_ParseString(

-    register char *spec,

-    XcmsColor *pColor)

-/*

- *	DESCRIPTION

- *		This routines takes a string and attempts to convert

- *		it into a XcmsColor structure with XcmsCIEuvYFormat.

- *		The assumed CIEuvY string syntax is:

- *		    CIEuvY:<u>/<v>/<Y>

- *		Where u, v, and Y are in string input format for floats

- *		consisting of:

- *		    a. an optional sign

- *		    b. a string of numbers possibly containing a decimal point,

- *		    c. an optional exponent field containing an 'E' or 'e'

- *			followed by a possibly signed integer string.

- *

- *	RETURNS

- *		0 if failed, non-zero otherwise.

- */

-{

-    int n;

-    char *pchar;

-

-    if ((pchar = strchr(spec, ':')) == NULL) {

-	return(XcmsFailure);

-    }

-    n = (int)(pchar - spec);

-

-    /*

-     * Check for proper prefix.

-     */

-    if (strncmp(spec, _XcmsCIEuvY_prefix, n) != 0) {

-	return(XcmsFailure);

-    }

-

-    /*

-     * Attempt to parse the value portion.

-     */

-    if (sscanf(spec + n + 1, "%lf/%lf/%lf",

-	    &pColor->spec.CIEuvY.u_prime,

-	    &pColor->spec.CIEuvY.v_prime,

-	    &pColor->spec.CIEuvY.Y) != 3) {

-        char *s; /* Maybe failed due to locale */

-        int f;

-        if ((s = strdup(spec))) {

-            for (f = 0; s[f]; ++f)

-                if (s[f] == '.')

-                    s[f] = ',';

-                else if (s[f] == ',')

-                    s[f] = '.';

-	    if (sscanf(s + n + 1, "%lf/%lf/%lf",

-		       &pColor->spec.CIEuvY.u_prime,

-		       &pColor->spec.CIEuvY.v_prime,

-		       &pColor->spec.CIEuvY.Y) != 3) {

-                free(s);

-                return(XcmsFailure);

-            }

-            free(s);

-        } else

-	    return(XcmsFailure);

-    }

-    pColor->format = XcmsCIEuvYFormat;

-    pColor->pixel = 0;

-    return(_XcmsCIEuvY_ValidSpec(pColor));

-}

-

-

-/************************************************************************

- *									*

- *			 PUBLIC ROUTINES				*

- *									*

- ************************************************************************/

-

-/*

- *	NAME

- *		XcmsCIEuvY_ValidSpec

- *

- *	SYNOPSIS

- */

-Status

-_XcmsCIEuvY_ValidSpec(

-    XcmsColor *pColor)

-/*

- *	DESCRIPTION

- *		Checks if color specification valid for CIE u'v'Y.

- *

- *	RETURNS

- *		XcmsFailure if invalid,

- *		XcmsSuccess if valid.

- *

- */

-{

-    if (pColor->format != XcmsCIEuvYFormat

-	    ||

-	    (pColor->spec.CIEuvY.Y < 0.0 - XMY_DBL_EPSILON)

-	    ||

-	    (pColor->spec.CIEuvY.Y > 1.0 + XMY_DBL_EPSILON)) {

-	return(XcmsFailure);

-    }

-    return(XcmsSuccess);

-}

-

-

-/*

- *	NAME

- *		XcmsCIEuvYToCIEXYZ - convert CIEuvY to CIEXYZ

- *

- *	SYNOPSIS

- */

-Status

-XcmsCIEuvYToCIEXYZ(

-    XcmsCCC ccc,

-    XcmsColor *puvY_WhitePt,

-    XcmsColor *pColors_in_out,

-    unsigned int nColors)

-/*

- *	DESCRIPTION

- *		Converts color specifications in an array of XcmsColor

- *		structures from CIEuvY format to CIEXYZ format.

- *

- *	RETURNS

- *		XcmsFailure if failed,

- *		XcmsSuccess if succeeded.

- *

- */

-{

-    XcmsCIEXYZ XYZ_return;

-    XcmsColor whitePt;

-    int i;

-    XcmsColor *pColor = pColors_in_out;

-    XcmsFloat div, x, y, z, Y;

-

-    /*

-     * Check arguments

-     *	Postpone checking puvY_WhitePt until it is actually needed

-     *	otherwise converting between XYZ and uvY will fail.

-     */

-    if (pColors_in_out == NULL) {

-	return(XcmsFailure);

-    }

-

-

-    /*

-     * Now convert each XcmsColor structure to CIEXYZ form

-     */

-    for (i = 0; i < nColors; i++, pColor++) {

-

-	/* Make sure original format is CIEuvY */

-	if (!_XcmsCIEuvY_ValidSpec(pColor)) {

-	    return(XcmsFailure);

-	}

-

-	/*

-	 * Convert to CIEXYZ

-	 */

-

-	Y = pColor->spec.CIEuvY.Y;

-

-	/* Convert color u'v' to xyz space */

-	div = (6.0 * pColor->spec.CIEuvY.u_prime) - (16.0 * pColor->spec.CIEuvY.v_prime) + 12.0;

-	if (div == 0.0) {

-	    /* use white point since div == 0 */

-	    if (puvY_WhitePt == NULL ) {

-		return(XcmsFailure);

-	    }

-	    /*

-	     * Make sure white point is in CIEuvY form

-	     */

-	    if (puvY_WhitePt->format != XcmsCIEuvYFormat) {

-		/* Make copy of the white point because we're going to modify it */

-		memcpy((char *)&whitePt, (char *)puvY_WhitePt, sizeof(XcmsColor));

-		if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1,

-			XcmsCIEuvYFormat)) {

-		    return(XcmsFailure);

-		}

-		puvY_WhitePt = &whitePt;

-	    }

-	    /* Make sure it is a white point, i.e., Y == 1.0 */

-	    if (puvY_WhitePt->spec.CIEuvY.Y != 1.0) {

-		return(XcmsFailure);

-	    }

-	    div = (6.0 * puvY_WhitePt->spec.CIEuvY.u_prime) -

-		    (16.0 * puvY_WhitePt->spec.CIEuvY.v_prime) + 12.0;

-	    if (div == 0) {

-		/* internal error */

-		return(XcmsFailure);

-	    }

-	    x = 9.0 * puvY_WhitePt->spec.CIEuvY.u_prime / div;

-	    y = 4.0 * puvY_WhitePt->spec.CIEuvY.v_prime / div;

-	} else {

-	    x = 9.0 * pColor->spec.CIEuvY.u_prime / div;

-	    y = 4.0 * pColor->spec.CIEuvY.v_prime / div;

-	}

-	z = 1.0 - x - y;

-

-	/* Convert from xyz to XYZ */

-	/* Conversion uses color normalized lightness based on Y */

-	if (y != 0.0) {

-	    XYZ_return.X = x * Y / y;

-	} else {

-	    XYZ_return.X = x;

-	}

-	XYZ_return.Y = Y;

-	if (y != 0.0) {

-	    XYZ_return.Z = z * Y / y;

-	} else {

-	    XYZ_return.Z = z;

-	}

-

-	memcpy((char *)&pColor->spec.CIEXYZ, (char *)&XYZ_return, sizeof(XcmsCIEXYZ));

-	/* Identify that format is now CIEXYZ */

-	pColor->format = XcmsCIEXYZFormat;

-    }

-

-    return(XcmsSuccess);

-}

-

-

-/*

- *	NAME

- *		XcmsCIEXYZToCIEuvY - convert CIEXYZ to CIEuvY

- *

- *	SYNOPSIS

- */

-Status

-XcmsCIEXYZToCIEuvY(

-    XcmsCCC ccc,

-    XcmsColor *puvY_WhitePt,

-    XcmsColor *pColors_in_out,

-    unsigned int nColors)

-/*

- *	DESCRIPTION

- *		Converts color specifications in an array of XcmsColor

- *		structures from CIEXYZ format to CIEuvY format.

- *

- *	RETURNS

- *		XcmsFailure if failed,

- *		XcmsSuccess if succeeded.

- *

- */

-{

-    XcmsCIEuvY uvY_return;

-    XcmsColor whitePt;

-    int i;

-    XcmsColor *pColor = pColors_in_out;

-    XcmsFloat div;

-

-    /*

-     * Check arguments

-     *	Postpone checking puvY_WhitePt until it is actually needed

-     *	otherwise converting between XYZ and uvY will fail.

-     */

-    if (pColors_in_out == NULL) {

-	return(XcmsFailure);

-    }

-

-    /*

-     * Now convert each XcmsColor structure to CIEuvY form

-     */

-    for (i = 0; i < nColors; i++, pColor++) {

-

-	/* Make sure original format is CIEXYZ */

-	if (!_XcmsCIEXYZ_ValidSpec(pColor)) {

-	    return(XcmsFailure);

-	}

-

-	/* Convert to CIEuvY */

-	div = pColor->spec.CIEXYZ.X + (15.0 * pColor->spec.CIEXYZ.Y) +

-		(3.0 * pColor->spec.CIEXYZ.Z);

-	if (div == 0.0) {

-	    /* Use white point since div == 0.0 */

-	    if (puvY_WhitePt == NULL ) {

-		return(XcmsFailure);

-	    }

-	    /*

-	     * Make sure white point is in CIEuvY form

-	     */

-	    if (puvY_WhitePt->format != XcmsCIEuvYFormat) {

-		/* Make copy of the white point because we're going to modify it */

-		memcpy((char *)&whitePt, (char *)puvY_WhitePt, sizeof(XcmsColor));

-		if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1,

-			XcmsCIEuvYFormat)) {

-		    return(XcmsFailure);

-		}

-		puvY_WhitePt = &whitePt;

-	    }

-	    /* Make sure it is a white point, i.e., Y == 1.0 */

-	    if (puvY_WhitePt->spec.CIEuvY.Y != 1.0) {

-		return(XcmsFailure);

-	    }

-	    uvY_return.Y = pColor->spec.CIEXYZ.Y;

-	    uvY_return.u_prime = puvY_WhitePt->spec.CIEuvY.u_prime;

-	    uvY_return.v_prime = puvY_WhitePt->spec.CIEuvY.v_prime;

-	} else {

-	    uvY_return.u_prime = 4.0 * pColor->spec.CIEXYZ.X / div;

-	    uvY_return.v_prime = 9.0 * pColor->spec.CIEXYZ.Y / div;

-	    uvY_return.Y = pColor->spec.CIEXYZ.Y;

-	}

-

-	memcpy((char *)&pColor->spec.CIEuvY, (char *)&uvY_return, sizeof(XcmsCIEuvY));

-	/* Identify that format is now CIEuvY */

-	pColor->format = XcmsCIEuvYFormat;

-    }

-

-    return(XcmsSuccess);

-}

+
+/*
+ * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc.
+ * 	All Rights Reserved
+ *
+ * This file is a component of an X Window System-specific implementation
+ * of XCMS based on the TekColor Color Management System.  Permission is
+ * hereby granted to use, copy, modify, sell, and otherwise distribute this
+ * software and its documentation for any purpose and without fee, provided
+ * that this copyright, permission, and disclaimer notice is reproduced in
+ * all copies of this software and in supporting documentation.  TekColor
+ * is a trademark of Tektronix, Inc.
+ *
+ * Tektronix makes no representation about the suitability of this software
+ * for any purpose.  It is provided "as is" and with all faults.
+ *
+ * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE,
+ * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE.  IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.
+ *
+ *
+ *	NAME
+ *		CIEuvy.c
+ *
+ *	DESCRIPTION
+ *		This file contains routines that support the CIE u'v'Y
+ *		color space to include conversions to and from the CIE
+ *		XYZ space.
+ *
+ *	DOCUMENTATION
+ *		"TekColor Color Management System, System Implementor's Manual"
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xos.h>
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include "Cv.h"
+
+#include <stdio.h>
+
+/*
+ *	FORWARD DECLARATIONS
+ */
+static int CIEuvY_ParseString(register char *spec, XcmsColor *pColor);
+
+/*
+ *	DEFINES
+ *		Internal definitions that need NOT be exported to any package
+ *		or program using this package.
+ */
+#ifdef DBL_EPSILON
+#  define XMY_DBL_EPSILON DBL_EPSILON
+#else
+#  define XMY_DBL_EPSILON 0.00001
+#endif
+
+
+/*
+ *	LOCAL VARIABLES
+ */
+
+    /*
+     * NULL terminated list of functions applied to get from CIEuvY to CIEXYZ
+     */
+static XcmsConversionProc Fl_CIEuvY_to_CIEXYZ[] = {
+    XcmsCIEuvYToCIEXYZ,
+    NULL
+};
+
+    /*
+     * NULL terminated list of functions applied to get from CIEXYZ to CIEuvY
+     */
+static XcmsConversionProc Fl_CIEXYZ_to_CIEuvY[] = {
+    XcmsCIEXYZToCIEuvY,
+    NULL
+};
+
+
+/*
+ *	GLOBALS
+ */
+
+    /*
+     * CIE uvY Color Space
+     */
+XcmsColorSpace	XcmsCIEuvYColorSpace =
+    {
+	_XcmsCIEuvY_prefix,		/* prefix */
+	XcmsCIEuvYFormat,		/* id */
+	CIEuvY_ParseString,	/* parseString */
+	Fl_CIEuvY_to_CIEXYZ,	/* to_CIEXYZ */
+	Fl_CIEXYZ_to_CIEuvY,	/* from_CIEXYZ */
+	1
+    };
+
+
+
+/************************************************************************
+ *									*
+ *			 PRIVATE ROUTINES				*
+ *									*
+ ************************************************************************/
+
+/*
+ *	NAME
+ *		CIEuvY_ParseString
+ *
+ *	SYNOPSIS
+ */
+static int
+CIEuvY_ParseString(
+    register char *spec,
+    XcmsColor *pColor)
+/*
+ *	DESCRIPTION
+ *		This routines takes a string and attempts to convert
+ *		it into a XcmsColor structure with XcmsCIEuvYFormat.
+ *		The assumed CIEuvY string syntax is:
+ *		    CIEuvY:<u>/<v>/<Y>
+ *		Where u, v, and Y are in string input format for floats
+ *		consisting of:
+ *		    a. an optional sign
+ *		    b. a string of numbers possibly containing a decimal point,
+ *		    c. an optional exponent field containing an 'E' or 'e'
+ *			followed by a possibly signed integer string.
+ *
+ *	RETURNS
+ *		0 if failed, non-zero otherwise.
+ */
+{
+    int n;
+    char *pchar;
+
+    if ((pchar = strchr(spec, ':')) == NULL) {
+	return(XcmsFailure);
+    }
+    n = (int)(pchar - spec);
+
+    /*
+     * Check for proper prefix.
+     */
+    if (strncmp(spec, _XcmsCIEuvY_prefix, n) != 0) {
+	return(XcmsFailure);
+    }
+
+    /*
+     * Attempt to parse the value portion.
+     */
+    if (sscanf(spec + n + 1, "%lf/%lf/%lf",
+	    &pColor->spec.CIEuvY.u_prime,
+	    &pColor->spec.CIEuvY.v_prime,
+	    &pColor->spec.CIEuvY.Y) != 3) {
+        char *s; /* Maybe failed due to locale */
+        int f;
+        if ((s = strdup(spec))) {
+            for (f = 0; s[f]; ++f)
+                if (s[f] == '.')
+                    s[f] = ',';
+                else if (s[f] == ',')
+                    s[f] = '.';
+	    if (sscanf(s + n + 1, "%lf/%lf/%lf",
+		       &pColor->spec.CIEuvY.u_prime,
+		       &pColor->spec.CIEuvY.v_prime,
+		       &pColor->spec.CIEuvY.Y) != 3) {
+                free(s);
+                return(XcmsFailure);
+            }
+            free(s);
+        } else
+	    return(XcmsFailure);
+    }
+    pColor->format = XcmsCIEuvYFormat;
+    pColor->pixel = 0;
+    return(_XcmsCIEuvY_ValidSpec(pColor));
+}
+
+
+/************************************************************************
+ *									*
+ *			 PUBLIC ROUTINES				*
+ *									*
+ ************************************************************************/
+
+/*
+ *	NAME
+ *		XcmsCIEuvY_ValidSpec
+ *
+ *	SYNOPSIS
+ */
+Status
+_XcmsCIEuvY_ValidSpec(
+    XcmsColor *pColor)
+/*
+ *	DESCRIPTION
+ *		Checks if color specification valid for CIE u'v'Y.
+ *
+ *	RETURNS
+ *		XcmsFailure if invalid,
+ *		XcmsSuccess if valid.
+ *
+ */
+{
+    if (pColor->format != XcmsCIEuvYFormat
+	    ||
+	    (pColor->spec.CIEuvY.Y < 0.0 - XMY_DBL_EPSILON)
+	    ||
+	    (pColor->spec.CIEuvY.Y > 1.0 + XMY_DBL_EPSILON)) {
+	return(XcmsFailure);
+    }
+    return(XcmsSuccess);
+}
+
+
+/*
+ *	NAME
+ *		XcmsCIEuvYToCIEXYZ - convert CIEuvY to CIEXYZ
+ *
+ *	SYNOPSIS
+ */
+Status
+XcmsCIEuvYToCIEXYZ(
+    XcmsCCC ccc,
+    XcmsColor *puvY_WhitePt,
+    XcmsColor *pColors_in_out,
+    unsigned int nColors)
+/*
+ *	DESCRIPTION
+ *		Converts color specifications in an array of XcmsColor
+ *		structures from CIEuvY format to CIEXYZ format.
+ *
+ *	RETURNS
+ *		XcmsFailure if failed,
+ *		XcmsSuccess if succeeded.
+ *
+ */
+{
+    XcmsCIEXYZ XYZ_return;
+    XcmsColor whitePt;
+    int i;
+    XcmsColor *pColor = pColors_in_out;
+    XcmsFloat div, x, y, z, Y;
+
+    /*
+     * Check arguments
+     *	Postpone checking puvY_WhitePt until it is actually needed
+     *	otherwise converting between XYZ and uvY will fail.
+     */
+    if (pColors_in_out == NULL) {
+	return(XcmsFailure);
+    }
+
+
+    /*
+     * Now convert each XcmsColor structure to CIEXYZ form
+     */
+    for (i = 0; i < nColors; i++, pColor++) {
+
+	/* Make sure original format is CIEuvY */
+	if (!_XcmsCIEuvY_ValidSpec(pColor)) {
+	    return(XcmsFailure);
+	}
+
+	/*
+	 * Convert to CIEXYZ
+	 */
+
+	Y = pColor->spec.CIEuvY.Y;
+
+	/* Convert color u'v' to xyz space */
+	div = (6.0 * pColor->spec.CIEuvY.u_prime) - (16.0 * pColor->spec.CIEuvY.v_prime) + 12.0;
+	if (div == 0.0) {
+	    /* use white point since div == 0 */
+	    if (puvY_WhitePt == NULL ) {
+		return(XcmsFailure);
+	    }
+	    /*
+	     * Make sure white point is in CIEuvY form
+	     */
+	    if (puvY_WhitePt->format != XcmsCIEuvYFormat) {
+		/* Make copy of the white point because we're going to modify it */
+		memcpy((char *)&whitePt, (char *)puvY_WhitePt, sizeof(XcmsColor));
+		if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1,
+			XcmsCIEuvYFormat)) {
+		    return(XcmsFailure);
+		}
+		puvY_WhitePt = &whitePt;
+	    }
+	    /* Make sure it is a white point, i.e., Y == 1.0 */
+	    if (puvY_WhitePt->spec.CIEuvY.Y != 1.0) {
+		return(XcmsFailure);
+	    }
+	    div = (6.0 * puvY_WhitePt->spec.CIEuvY.u_prime) -
+		    (16.0 * puvY_WhitePt->spec.CIEuvY.v_prime) + 12.0;
+	    if (div == 0) {
+		/* internal error */
+		return(XcmsFailure);
+	    }
+	    x = 9.0 * puvY_WhitePt->spec.CIEuvY.u_prime / div;
+	    y = 4.0 * puvY_WhitePt->spec.CIEuvY.v_prime / div;
+	} else {
+	    x = 9.0 * pColor->spec.CIEuvY.u_prime / div;
+	    y = 4.0 * pColor->spec.CIEuvY.v_prime / div;
+	}
+	z = 1.0 - x - y;
+
+	/* Convert from xyz to XYZ */
+	/* Conversion uses color normalized lightness based on Y */
+	if (y != 0.0) {
+	    XYZ_return.X = x * Y / y;
+	} else {
+	    XYZ_return.X = x;
+	}
+	XYZ_return.Y = Y;
+	if (y != 0.0) {
+	    XYZ_return.Z = z * Y / y;
+	} else {
+	    XYZ_return.Z = z;
+	}
+
+	memcpy((char *)&pColor->spec.CIEXYZ, (char *)&XYZ_return, sizeof(XcmsCIEXYZ));
+	/* Identify that format is now CIEXYZ */
+	pColor->format = XcmsCIEXYZFormat;
+    }
+
+    return(XcmsSuccess);
+}
+
+
+/*
+ *	NAME
+ *		XcmsCIEXYZToCIEuvY - convert CIEXYZ to CIEuvY
+ *
+ *	SYNOPSIS
+ */
+Status
+XcmsCIEXYZToCIEuvY(
+    XcmsCCC ccc,
+    XcmsColor *puvY_WhitePt,
+    XcmsColor *pColors_in_out,
+    unsigned int nColors)
+/*
+ *	DESCRIPTION
+ *		Converts color specifications in an array of XcmsColor
+ *		structures from CIEXYZ format to CIEuvY format.
+ *
+ *	RETURNS
+ *		XcmsFailure if failed,
+ *		XcmsSuccess if succeeded.
+ *
+ */
+{
+    XcmsCIEuvY uvY_return;
+    XcmsColor whitePt;
+    int i;
+    XcmsColor *pColor = pColors_in_out;
+    XcmsFloat div;
+
+    /*
+     * Check arguments
+     *	Postpone checking puvY_WhitePt until it is actually needed
+     *	otherwise converting between XYZ and uvY will fail.
+     */
+    if (pColors_in_out == NULL) {
+	return(XcmsFailure);
+    }
+
+    /*
+     * Now convert each XcmsColor structure to CIEuvY form
+     */
+    for (i = 0; i < nColors; i++, pColor++) {
+
+	/* Make sure original format is CIEXYZ */
+	if (!_XcmsCIEXYZ_ValidSpec(pColor)) {
+	    return(XcmsFailure);
+	}
+
+	/* Convert to CIEuvY */
+	div = pColor->spec.CIEXYZ.X + (15.0 * pColor->spec.CIEXYZ.Y) +
+		(3.0 * pColor->spec.CIEXYZ.Z);
+	if (div == 0.0) {
+	    /* Use white point since div == 0.0 */
+	    if (puvY_WhitePt == NULL ) {
+		return(XcmsFailure);
+	    }
+	    /*
+	     * Make sure white point is in CIEuvY form
+	     */
+	    if (puvY_WhitePt->format != XcmsCIEuvYFormat) {
+		/* Make copy of the white point because we're going to modify it */
+		memcpy((char *)&whitePt, (char *)puvY_WhitePt, sizeof(XcmsColor));
+		if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1,
+			XcmsCIEuvYFormat)) {
+		    return(XcmsFailure);
+		}
+		puvY_WhitePt = &whitePt;
+	    }
+	    /* Make sure it is a white point, i.e., Y == 1.0 */
+	    if (puvY_WhitePt->spec.CIEuvY.Y != 1.0) {
+		return(XcmsFailure);
+	    }
+	    uvY_return.Y = pColor->spec.CIEXYZ.Y;
+	    uvY_return.u_prime = puvY_WhitePt->spec.CIEuvY.u_prime;
+	    uvY_return.v_prime = puvY_WhitePt->spec.CIEuvY.v_prime;
+	} else {
+	    uvY_return.u_prime = 4.0 * pColor->spec.CIEXYZ.X / div;
+	    uvY_return.v_prime = 9.0 * pColor->spec.CIEXYZ.Y / div;
+	    uvY_return.Y = pColor->spec.CIEXYZ.Y;
+	}
+
+	memcpy((char *)&pColor->spec.CIEuvY, (char *)&uvY_return, sizeof(XcmsCIEuvY));
+	/* Identify that format is now CIEuvY */
+	pColor->format = XcmsCIEuvYFormat;
+    }
+
+    return(XcmsSuccess);
+}