Remove unused TOINT_RINT and TOINT_SHIFT macros

Only have separate code paths for TOINT_INTRINSICS and !TOINT_INTRINSICS.

newlib/libm/common/math_config.h

@@ -93,12 +93,6 @@ converttoint (double_t x)
 #ifndef TOINT_INTRINSICS
 # define TOINT_INTRINSICS 0
 #endif
-#ifndef TOINT_RINT
-# define TOINT_RINT 0
-#endif
-#ifndef TOINT_SHIFT
-# define TOINT_SHIFT 1
-#endif
 
 static inline uint32_t
 asuint (float f)

newlib/libm/common/sf_exp.c

@@ -88,10 +88,7 @@ expf (float x)
 #if TOINT_INTRINSICS
   kd = roundtoint (z);
   ki = converttoint (z);
-#elif TOINT_RINT
-  kd = rint (z);
-  ki = (long) kd;
-#elif TOINT_SHIFT
+#else
 # define SHIFT __exp2f_data.shift
   kd = (double) (z + SHIFT); /* Rounding to double precision is required.  */
   ki = asuint64 (kd);