dos -> unix

1 files changed, 395 insertions, 395 deletions

diff --git a/libX11/src/xcms/xyY.c b/libX11/src/xcms/xyY.c
index 6f6562621..6f9457496 100644
--- a/libX11/src/xcms/xyY.c
+++ b/libX11/src/xcms/xyY.c
@@ -1,395 +1,395 @@
-

-/*

- * 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

- *		CIExyY.c

- *

- *	DESCRIPTION

- *		This file contains routines that support the CIE xyY

- *		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 <stdio.h>

-#include <X11/Xos.h>

-#include "Xlibint.h"

-#include "Xcmsint.h"

-#include "Cv.h"

-

-/*

- *	DEFINES

- */

-#define EPS 0.00001	/* some extremely small number */

-#ifdef DBL_EPSILON

-#  define XMY_DBL_EPSILON DBL_EPSILON

-#else

-#  define XMY_DBL_EPSILON 0.00001

-#endif

-

-/*

- *	FORWARD DECLARATIONS

- */

-

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

-static Status XcmsCIExyY_ValidSpec(XcmsColor *pColor);

-

-

-/*

- *	LOCAL VARIABLES

- */

-

-    /*

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

-     */

-static XcmsConversionProc Fl_CIExyY_to_CIEXYZ[] = {

-    XcmsCIExyYToCIEXYZ,

-    NULL

-};

-

-    /*

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

-     */

-static XcmsConversionProc Fl_CIEXYZ_to_CIExyY[] = {

-    XcmsCIEXYZToCIExyY,

-    NULL

-};

-

-

-/*

- *	GLOBALS

- */

-

-    /*

-     * CIE xyY Color Space

-     */

-XcmsColorSpace	XcmsCIExyYColorSpace =

-    {

-	_XcmsCIExyY_prefix,	/* prefix */

-	XcmsCIExyYFormat,		/* id */

-	CIExyY_ParseString,	/* parseString */

-	Fl_CIExyY_to_CIEXYZ,	/* to_CIEXYZ */

-	Fl_CIEXYZ_to_CIExyY,	/* from_CIEXYZ */

-	1

-    };

-

-

-

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

- *									*

- *			 PRIVATE ROUTINES				*

- *									*

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

-

-/*

- *	NAME

- *		CIExyY_ParseString

- *

- *	SYNOPSIS

- */

-static int

-CIExyY_ParseString(

-    register char *spec,

-    XcmsColor *pColor)

-/*

- *	DESCRIPTION

- *		This routines takes a string and attempts to convert

- *		it into a XcmsColor structure with XcmsCIExyYFormat.

- *		The assumed CIExyY string syntax is:

- *		    CIExyY:<x>/<y>/<Y>

- *		Where x, y, 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, _XcmsCIExyY_prefix, n) != 0) {

-	return(XcmsFailure);

-    }

-

-    /*

-     * Attempt to parse the value portion.

-     */

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

-	    &pColor->spec.CIExyY.x,

-	    &pColor->spec.CIExyY.y,

-	    &pColor->spec.CIExyY.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.CIExyY.x,

-		       &pColor->spec.CIExyY.y,

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

-                free(s);

-                return(XcmsFailure);

-            }

-            free(s);

-        } else

-	    return(XcmsFailure);

-    }

-    pColor->format = XcmsCIExyYFormat;

-    pColor->pixel = 0;

-    return(XcmsCIExyY_ValidSpec(pColor));

-}

-

-

-

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

- *									*

- *			 PUBLIC ROUTINES				*

- *									*

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

-

-/*

- *	NAME

- *		CIExyY_ValidSpec()

- *

- *	SYNOPSIS

- */

-static Status

-XcmsCIExyY_ValidSpec(

-    XcmsColor *pColor)

-/*

- *	DESCRIPTION

- *		Checks a valid CIExyY color specification.

- *

- *	RETURNS

- *		XcmsFailure if invalid.

- *		XcmsSuccess if valid.

- *

- */

-{

-    if (pColor->format != XcmsCIExyYFormat

-	    ||

-	    (pColor->spec.CIExyY.x < 0.0 - XMY_DBL_EPSILON)

-	    ||

-	    (pColor->spec.CIExyY.x > 1.0 + XMY_DBL_EPSILON)

-	    ||

-	    (pColor->spec.CIExyY.y < 0.0 - XMY_DBL_EPSILON)

-	    ||

-	    (pColor->spec.CIExyY.y > 1.0 + XMY_DBL_EPSILON)

-	    ||

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

-	    ||

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

-	return(XcmsFailure);

-    }

-    return(XcmsSuccess);

-}

-

-

-/*

- *	NAME

- *		XcmsCIExyYToCIEXYZ - convert CIExyY to CIEXYZ

- *

- *	SYNOPSIS

- */

-Status

-XcmsCIExyYToCIEXYZ(

-    XcmsCCC ccc,

-    XcmsColor *pxyY_WhitePt,

-    XcmsColor *pColors_in_out,

-    unsigned int nColors)

-/*

- *	DESCRIPTION

- *		Converts color specifications in an array of XcmsColor

- *		structures from CIExyY format to CIEXYZ format.

- *

- *	RETURNS

- *		XcmsFailure if failed,

- *		XcmsSuccess if succeeded.

- */

-{

-    XcmsColor	*pColor = pColors_in_out;

-    XcmsColor	whitePt;

-    XcmsCIEXYZ	XYZ_return;

-    XcmsFloat	div;		/* temporary storage in case divisor is zero */

-    XcmsFloat	u, v, x, y, z;	/* temporary storage */

-    register int i;

-

-    /*

-     * Check arguments

-     */

-    if (pxyY_WhitePt == NULL || 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 CIExyY and valid */

-	if (!XcmsCIExyY_ValidSpec(pColor)) {

-	    return(XcmsFailure);

-	}

-

-	if ((div = (-2 * pColor->spec.CIExyY.x) + (12 * pColor->spec.CIExyY.y) + 3) == 0.0) {

-	    /* Note that the divisor is zero */

-	    /* This return is abitrary. */

-	    XYZ_return.X = 0;

-	    XYZ_return.Y = 0;

-	    XYZ_return.Z = 0;

-	} else {

-	    /*

-	     * Make sure white point is in CIEXYZ form

-	     */

-	    if (pxyY_WhitePt->format != XcmsCIEXYZFormat) {

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

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

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

-			XcmsCIEXYZFormat)) {

-		    return(XcmsFailure);

-		}

-		pxyY_WhitePt = &whitePt;

-	    }

-

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

-	    if (pxyY_WhitePt->spec.CIEXYZ.Y != 1.0) {

-		return(XcmsFailure);

-	    }

-

-	    /* Convert from xyY to uvY to XYZ */

-	    u = (4 * pColor->spec.CIExyY.x) / div;

-	    v = (9 * pColor->spec.CIExyY.y) / div;

-	    div = (6.0 * u) - (16.0 * v) + 12.0;

-	    if (div == 0.0) {

-		/* Note that the divisor is zero */

-		/* This return is abitrary. */

-		if ((div = (6.0 * whitePt.spec.CIEuvY.u_prime) -

-		           (16.0 * whitePt.spec.CIEuvY.v_prime) + 12.0) == 0.0) {

-		    div = EPS;

-		}

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

-		y = 4.0 * whitePt.spec.CIEuvY.u_prime / div;

-	    } else {

-		/* convert u, v to small xyz */

-		x = 9.0 * u / div;

-		y = 4.0 * v / div;

-	    }

-	    z = 1.0 - x - y;

-	    if (y == 0.0) y = EPS;	/* Have to worry about divide by 0 */

-	    XYZ_return.Y = pColor->spec.CIExyY.Y;

-	    XYZ_return.X = x * XYZ_return.Y / y;

-	    XYZ_return.Z = z * XYZ_return.Y / y;

-	}

-

-	/* Copy result to pColor */

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

-

-	/* Identify that the format is now CIEXYZ */

-	pColor->format = XcmsCIEXYZFormat;

-    }

-    return(XcmsSuccess);

-}

-

-

-/*

- *	NAME

- *		XcmsCIEXYZToCIExyY - convert CIEXYZ to CIExyY

- *

- *	SYNOPSIS

- */

-/* ARGSUSED */

-Status

-XcmsCIEXYZToCIExyY(

-    XcmsCCC ccc,

-    XcmsColor *pxyY_WhitePt,

-    XcmsColor *pColors_in_out,

-    unsigned int nColors)

-/*

- *	DESCRIPTION

- *		Converts color specifications in an array of XcmsColor

- *		structures from CIEXYZ format to CIExyY format.

- *

- *	RETURNS

- *		XcmsFailure if failed,

- *		XcmsSuccess if succeeded.

- *

- */

-{

-    XcmsColor	*pColor = pColors_in_out;

-    XcmsCIExyY	xyY_return;

-    XcmsFloat	div;		/* temporary storage in case divisor is zero */

-    register int i;

-

-    /*

-     * Check arguments

-     * 		pxyY_WhitePt ignored

-     */

-    if (pColors_in_out == NULL) {

-	return(XcmsFailure);

-    }

-

-    /*

-     * Now convert each XcmsColor structure to CIEXYZ form

-     */

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

-

-	if (!_XcmsCIEXYZ_ValidSpec(pColor)) {

-	    return(XcmsFailure);

-	}

-	/* Now convert for XYZ to xyY */

-	if ((div = pColor->spec.CIEXYZ.X + pColor->spec.CIEXYZ.Y + pColor->spec.CIEXYZ.Z) == 0.0) {

-	    div = EPS;

-	}

-	xyY_return.x = pColor->spec.CIEXYZ.X / div;

-	xyY_return.y = pColor->spec.CIEXYZ.Y / div;

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

-

-	/* Copy result to pColor */

-	memcpy ((char *)&pColor->spec, (char *)&xyY_return, sizeof(XcmsCIExyY));

-

-	/* Identify that the format is now CIEXYZ */

-	pColor->format = XcmsCIExyYFormat;

-    }

-    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
+ *		CIExyY.c
+ *
+ *	DESCRIPTION
+ *		This file contains routines that support the CIE xyY
+ *		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 <stdio.h>
+#include <X11/Xos.h>
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include "Cv.h"
+
+/*
+ *	DEFINES
+ */
+#define EPS 0.00001	/* some extremely small number */
+#ifdef DBL_EPSILON
+#  define XMY_DBL_EPSILON DBL_EPSILON
+#else
+#  define XMY_DBL_EPSILON 0.00001
+#endif
+
+/*
+ *	FORWARD DECLARATIONS
+ */
+
+static int CIExyY_ParseString(register char *spec, XcmsColor *pColor);
+static Status XcmsCIExyY_ValidSpec(XcmsColor *pColor);
+
+
+/*
+ *	LOCAL VARIABLES
+ */
+
+    /*
+     * NULL terminated list of functions applied to get from CIExyY to CIEXYZ
+     */
+static XcmsConversionProc Fl_CIExyY_to_CIEXYZ[] = {
+    XcmsCIExyYToCIEXYZ,
+    NULL
+};
+
+    /*
+     * NULL terminated list of functions applied to get from CIEXYZ to CIExyY
+     */
+static XcmsConversionProc Fl_CIEXYZ_to_CIExyY[] = {
+    XcmsCIEXYZToCIExyY,
+    NULL
+};
+
+
+/*
+ *	GLOBALS
+ */
+
+    /*
+     * CIE xyY Color Space
+     */
+XcmsColorSpace	XcmsCIExyYColorSpace =
+    {
+	_XcmsCIExyY_prefix,	/* prefix */
+	XcmsCIExyYFormat,		/* id */
+	CIExyY_ParseString,	/* parseString */
+	Fl_CIExyY_to_CIEXYZ,	/* to_CIEXYZ */
+	Fl_CIEXYZ_to_CIExyY,	/* from_CIEXYZ */
+	1
+    };
+
+
+
+/************************************************************************
+ *									*
+ *			 PRIVATE ROUTINES				*
+ *									*
+ ************************************************************************/
+
+/*
+ *	NAME
+ *		CIExyY_ParseString
+ *
+ *	SYNOPSIS
+ */
+static int
+CIExyY_ParseString(
+    register char *spec,
+    XcmsColor *pColor)
+/*
+ *	DESCRIPTION
+ *		This routines takes a string and attempts to convert
+ *		it into a XcmsColor structure with XcmsCIExyYFormat.
+ *		The assumed CIExyY string syntax is:
+ *		    CIExyY:<x>/<y>/<Y>
+ *		Where x, y, 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, _XcmsCIExyY_prefix, n) != 0) {
+	return(XcmsFailure);
+    }
+
+    /*
+     * Attempt to parse the value portion.
+     */
+    if (sscanf(spec + n + 1, "%lf/%lf/%lf",
+	    &pColor->spec.CIExyY.x,
+	    &pColor->spec.CIExyY.y,
+	    &pColor->spec.CIExyY.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.CIExyY.x,
+		       &pColor->spec.CIExyY.y,
+		       &pColor->spec.CIExyY.Y) != 3) {
+                free(s);
+                return(XcmsFailure);
+            }
+            free(s);
+        } else
+	    return(XcmsFailure);
+    }
+    pColor->format = XcmsCIExyYFormat;
+    pColor->pixel = 0;
+    return(XcmsCIExyY_ValidSpec(pColor));
+}
+
+
+
+/************************************************************************
+ *									*
+ *			 PUBLIC ROUTINES				*
+ *									*
+ ************************************************************************/
+
+/*
+ *	NAME
+ *		CIExyY_ValidSpec()
+ *
+ *	SYNOPSIS
+ */
+static Status
+XcmsCIExyY_ValidSpec(
+    XcmsColor *pColor)
+/*
+ *	DESCRIPTION
+ *		Checks a valid CIExyY color specification.
+ *
+ *	RETURNS
+ *		XcmsFailure if invalid.
+ *		XcmsSuccess if valid.
+ *
+ */
+{
+    if (pColor->format != XcmsCIExyYFormat
+	    ||
+	    (pColor->spec.CIExyY.x < 0.0 - XMY_DBL_EPSILON)
+	    ||
+	    (pColor->spec.CIExyY.x > 1.0 + XMY_DBL_EPSILON)
+	    ||
+	    (pColor->spec.CIExyY.y < 0.0 - XMY_DBL_EPSILON)
+	    ||
+	    (pColor->spec.CIExyY.y > 1.0 + XMY_DBL_EPSILON)
+	    ||
+	    (pColor->spec.CIExyY.Y < 0.0 - XMY_DBL_EPSILON)
+	    ||
+	    (pColor->spec.CIExyY.Y > 1.0 + XMY_DBL_EPSILON)) {
+	return(XcmsFailure);
+    }
+    return(XcmsSuccess);
+}
+
+
+/*
+ *	NAME
+ *		XcmsCIExyYToCIEXYZ - convert CIExyY to CIEXYZ
+ *
+ *	SYNOPSIS
+ */
+Status
+XcmsCIExyYToCIEXYZ(
+    XcmsCCC ccc,
+    XcmsColor *pxyY_WhitePt,
+    XcmsColor *pColors_in_out,
+    unsigned int nColors)
+/*
+ *	DESCRIPTION
+ *		Converts color specifications in an array of XcmsColor
+ *		structures from CIExyY format to CIEXYZ format.
+ *
+ *	RETURNS
+ *		XcmsFailure if failed,
+ *		XcmsSuccess if succeeded.
+ */
+{
+    XcmsColor	*pColor = pColors_in_out;
+    XcmsColor	whitePt;
+    XcmsCIEXYZ	XYZ_return;
+    XcmsFloat	div;		/* temporary storage in case divisor is zero */
+    XcmsFloat	u, v, x, y, z;	/* temporary storage */
+    register int i;
+
+    /*
+     * Check arguments
+     */
+    if (pxyY_WhitePt == NULL || 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 CIExyY and valid */
+	if (!XcmsCIExyY_ValidSpec(pColor)) {
+	    return(XcmsFailure);
+	}
+
+	if ((div = (-2 * pColor->spec.CIExyY.x) + (12 * pColor->spec.CIExyY.y) + 3) == 0.0) {
+	    /* Note that the divisor is zero */
+	    /* This return is abitrary. */
+	    XYZ_return.X = 0;
+	    XYZ_return.Y = 0;
+	    XYZ_return.Z = 0;
+	} else {
+	    /*
+	     * Make sure white point is in CIEXYZ form
+	     */
+	    if (pxyY_WhitePt->format != XcmsCIEXYZFormat) {
+		/* Make copy of the white point because we're going to modify it */
+		memcpy((char *)&whitePt, (char *)pxyY_WhitePt, sizeof(XcmsColor));
+		if (!_XcmsDIConvertColors(ccc, &whitePt, (XcmsColor *)NULL, 1,
+			XcmsCIEXYZFormat)) {
+		    return(XcmsFailure);
+		}
+		pxyY_WhitePt = &whitePt;
+	    }
+
+	    /* Make sure it is a white point, i.e., Y == 1.0 */
+	    if (pxyY_WhitePt->spec.CIEXYZ.Y != 1.0) {
+		return(XcmsFailure);
+	    }
+
+	    /* Convert from xyY to uvY to XYZ */
+	    u = (4 * pColor->spec.CIExyY.x) / div;
+	    v = (9 * pColor->spec.CIExyY.y) / div;
+	    div = (6.0 * u) - (16.0 * v) + 12.0;
+	    if (div == 0.0) {
+		/* Note that the divisor is zero */
+		/* This return is abitrary. */
+		if ((div = (6.0 * whitePt.spec.CIEuvY.u_prime) -
+		           (16.0 * whitePt.spec.CIEuvY.v_prime) + 12.0) == 0.0) {
+		    div = EPS;
+		}
+		x = 9.0 * whitePt.spec.CIEuvY.u_prime / div;
+		y = 4.0 * whitePt.spec.CIEuvY.u_prime / div;
+	    } else {
+		/* convert u, v to small xyz */
+		x = 9.0 * u / div;
+		y = 4.0 * v / div;
+	    }
+	    z = 1.0 - x - y;
+	    if (y == 0.0) y = EPS;	/* Have to worry about divide by 0 */
+	    XYZ_return.Y = pColor->spec.CIExyY.Y;
+	    XYZ_return.X = x * XYZ_return.Y / y;
+	    XYZ_return.Z = z * XYZ_return.Y / y;
+	}
+
+	/* Copy result to pColor */
+	memcpy ((char *)&pColor->spec, (char *)&XYZ_return, sizeof(XcmsCIEXYZ));
+
+	/* Identify that the format is now CIEXYZ */
+	pColor->format = XcmsCIEXYZFormat;
+    }
+    return(XcmsSuccess);
+}
+
+
+/*
+ *	NAME
+ *		XcmsCIEXYZToCIExyY - convert CIEXYZ to CIExyY
+ *
+ *	SYNOPSIS
+ */
+/* ARGSUSED */
+Status
+XcmsCIEXYZToCIExyY(
+    XcmsCCC ccc,
+    XcmsColor *pxyY_WhitePt,
+    XcmsColor *pColors_in_out,
+    unsigned int nColors)
+/*
+ *	DESCRIPTION
+ *		Converts color specifications in an array of XcmsColor
+ *		structures from CIEXYZ format to CIExyY format.
+ *
+ *	RETURNS
+ *		XcmsFailure if failed,
+ *		XcmsSuccess if succeeded.
+ *
+ */
+{
+    XcmsColor	*pColor = pColors_in_out;
+    XcmsCIExyY	xyY_return;
+    XcmsFloat	div;		/* temporary storage in case divisor is zero */
+    register int i;
+
+    /*
+     * Check arguments
+     * 		pxyY_WhitePt ignored
+     */
+    if (pColors_in_out == NULL) {
+	return(XcmsFailure);
+    }
+
+    /*
+     * Now convert each XcmsColor structure to CIEXYZ form
+     */
+    for (i = 0; i < nColors; i++, pColor++) {
+
+	if (!_XcmsCIEXYZ_ValidSpec(pColor)) {
+	    return(XcmsFailure);
+	}
+	/* Now convert for XYZ to xyY */
+	if ((div = pColor->spec.CIEXYZ.X + pColor->spec.CIEXYZ.Y + pColor->spec.CIEXYZ.Z) == 0.0) {
+	    div = EPS;
+	}
+	xyY_return.x = pColor->spec.CIEXYZ.X / div;
+	xyY_return.y = pColor->spec.CIEXYZ.Y / div;
+	xyY_return.Y = pColor->spec.CIEXYZ.Y;
+
+	/* Copy result to pColor */
+	memcpy ((char *)&pColor->spec, (char *)&xyY_return, sizeof(XcmsCIExyY));
+
+	/* Identify that the format is now CIEXYZ */
+	pColor->format = XcmsCIExyYFormat;
+    }
+    return(XcmsSuccess);
+}