Merge in upstream openbsd commit yu8HfTXRTrrv8b2W which allows isnanf, isnand, isinff, and isinfd to be deleted.

liba/Makefile

@@ -12,10 +12,6 @@ objs += $(addprefix liba/src/, \
   fpclassify.o \
   fpclassifyf.o \
   ieee754.o \
-  isnand.o \
-  isnanf.o \
-  isinfd.o \
-  isinff.o \
   malloc.o \
   memcmp.o \
   memcpy.o \

liba/src/external/openbsd/s_roundf.c

@@ -34,7 +34,7 @@ roundf(float x)
 {
 	float t;
 
-	if (isinff(x) || isnanf(x))
+	if (isinf(x) || isnan(x))
 		return (x);
 
 	if (x >= 0.0) {

liba/src/isinfd.c

@@ -1,6 +0,0 @@
-#include <math.h>
-#include <private/ieee754.h>
-
-int isinfd(double x) {
-  return (ieee754exp64(x) == 0x7FF && ieee754man64(x) == 0);
-}

liba/src/isinff.c

@@ -1,6 +0,0 @@
-#include <math.h>
-#include <private/ieee754.h>
-
-int isinff(float x) {
-  return (ieee754exp32(x) == 0xFF && ieee754man32(x) == 0);
-}

liba/src/isnand.c

@@ -1,6 +0,0 @@
-#include <math.h>
-#include <private/ieee754.h>
-
-int isnand(double x) {
-  return (ieee754exp64(x) == 0x7FF && ieee754man64(x) != 0);
-}

liba/src/isnanf.c

@@ -1,6 +0,0 @@
-#include <math.h>
-#include <private/ieee754.h>
-
-int isnanf(float x) {
-  return (ieee754exp32(x) == 0xFF && ieee754man32(x) != 0);
-}