fix nextafterf. by Jie Zhang (jie.zhang AT analog.com)

libm/Makefile.in

@@ -61,7 +61,8 @@ libm_CSRC := \
 	s_asinh.c s_atan.c s_cbrt.c s_ceil.c s_copysign.c s_cos.c \
 	s_erf.c s_expm1.c s_fabs.c s_finite.c s_floor.c s_frexp.c \
 	s_ilogb.c s_ldexp.c s_lib_version.c s_lrint.c s_lround.c s_llround.c \
-	s_log1p.c s_logb.c s_matherr.c s_modf.c s_nextafter.c s_round.c \
+	s_log1p.c s_logb.c s_matherr.c s_modf.c s_nextafter.c \
+	s_nextafterf.c s_round.c \
 	s_rint.c s_scalbn.c s_signgam.c s_significand.c s_sin.c s_tan.c \
 	s_tanh.c s_trunc.c \
 	w_cabs.c \
@@ -76,7 +77,7 @@ FL_MOBJ := \
 	expm1f.o fabsf.o fdimf.o floorf.o fmaf.o fmaxf.o fminf.o fmodf.o \
 	frexpf.o hypotf.o ilogbf.o ldexpf.o lgammaf.o llroundf.o log10f.o \
 	log1pf.o log2f.o logbf.o logf.o lrintf.o lroundf.o modff.o nearbyintf.o \
-	nextafterf.o powf.o remainderf.o remquof.o rintf.o roundf.o \
+	powf.o remainderf.o remquof.o rintf.o roundf.o \
 	scalblnf.o scalbnf.o sinf.o sinhf.o sqrtf.o tanf.o tanhf.o \
 	tgammaf.o truncf.o cargf.o llrintf.o scalbf.o gammaf.o significandf.o
 

libm/float_wrappers.c

@@ -64,7 +64,6 @@ float       logbf(float);
 float       logf(float);
 long        lroundf(float);
 float       modff(float, float *);
-float       nextafterf(float, float);
 float       powf(float, float);
 float       remainderf(float, float);
 float       rintf(float);
@@ -409,14 +408,6 @@ float nearbyintf (float x)
 #endif
 
 
-#ifdef L_nextafterf
-float nextafterf (float x, float y)
-{
-	return (float) nextafter( (double)x, (double)y );
-}
-#endif
-
-
 #ifdef L_nexttowardf
 float nexttowardf (float x, long double y)
 {