This variable conditionally defines HAS_STRERROR if strerror() is
available to translate error numbers to strings.
+d_strftime (d_strftime.U):
+ This variable conditionally defines the HAS_STRFTIME symbol, which
+ indicates to the C program that the strftime() routine is available.
+
d_strtod (d_strtod.U):
This variable conditionally defines the HAS_STRTOD symbol, which
indicates to the C program that the strtod() routine is available