update epigraphs for v5.22.0 RCs

[perl5.git] / config_h.SH

diff --git a/config_h.SH b/config_h.SH
index 2cf870a..fb2224e 100755 (executable)
--- a/config_h.SH
+++ b/config_h.SH
@@ -1952,7 +1952,8 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 /* LONG_DOUBLESIZE:
  *     This symbol contains the size of a long double, so that the
  *     C preprocessor can make decisions based on it.  It is only
- *     defined if the system supports long doubles.
+ *     defined if the system supports long doubles.   Note that this
+ *     is sizeof(long double), which may include unused bytes.
  */
 /* HAS_LDEXPL:
  *     This symbol, if defined, indicates that the ldexpl routine is
@@ -3995,12 +3996,26 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_llrint HAS_LLRINT          /**/
 
+/* HAS_LLRINTL:
+ *     This symbol, if defined, indicates that the llrintl routine is
+ *     available to return the closest long long value of the long double
+ *     argument according to the current rounding mode.
+ */
+#$d_llrintl HAS_LLRINTL                /**/
+
 /* HAS_LLROUND:
  *     This symbol, if defined, indicates that the llround routine is
  *     available to return the nearest long long value.
  */
 #$d_llround HAS_LLROUND                /**/
 
+/* HAS_LLROUNDL:
+ *     This symbol, if defined, indicates that the llroundl routine is
+ *     available to return the nearest long long value away from zero of
+ *     the long double argument value.
+ */
+#$d_llroundl HAS_LLROUNDL              /**/
+
 /* HAS_LOG1P:
  *     This symbol, if defined, indicates that the log1p routine is
  *     available to do the logarithm of 1 plus argument function.
@@ -4026,12 +4041,26 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_lrint HAS_LRINT            /**/
 
+/* HAS_LRINTL:
+ *     This symbol, if defined, indicates that the lrintl routine is
+ *     available to return the closest integral value of the long double
+ *     argument according to the current rounding mode.
+ */
+#$d_lrintl HAS_LRINTL          /**/
+
 /* HAS_LROUND:
  *     This symbol, if defined, indicates that the lround routine is
  *     available to return the nearest integral value.
  */
 #$d_lround HAS_LROUND          /**/
 
+/* HAS_LROUNDL:
+ *     This symbol, if defined, indicates that the lroundl routine is
+ *     available to return the nearest integral value away from zero of
+ *     the long double argument value.
+ */
+#$d_lroundl HAS_LROUNDL                /**/
+
 /* HAS_MADVISE:
  *     This symbol, if defined, indicates that the madvise system call is
  *     available to map a file into memory.
@@ -4884,6 +4913,11 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 /* NVSIZE:
  *     This symbol contains the sizeof(NV).
+ *     Note that some floating point formats have unused bytes.
+ *     The most notable example is the x86* 80-bit extended precision
+ *     which comes in byte sizes of 12 and 16 (for 32 and 64 bit
+ *     platforms, respectively), but which only uses 10 bytes.
+ *     Perl compiled with -Duselongdouble on x86* is like this.
  */
 /* NV_PRESERVES_UV:
  *     This symbol, if defined, indicates that a variable of type NVTYPE