--- ray/src/common/color.h	1992/10/02 15:54:25	2.4
+++ ray/src/common/color.h	1993/08/02 13:51:43	2.6
@@ -98,9 +98,6 @@ typedef float  COLOR[3];	/* red, green, blue */
 #define  fputcolcor(cc,fp)	fprintf(fp,"%s %f %f %f\n",COLCORSTR, \
 					(cc)[RED],(cc)[GRN],(cc)[BLU])
 
-#ifndef ldexp
-extern double  ldexp();
-#endif
-#ifndef atof			/* atof's a macro on some systems! */
-extern double  atof();
+#ifdef  DCL_ATOF
+extern double  atof(), ldexp(), frexp();
 #endif