MNT: ISO C++17 does not allow register storage class specifier

miscmaths.cc

@@ -2679,9 +2679,9 @@ typedef struct { unsigned char a,b ; } TWObytes ;
 
 void Swap_2bytes( int n , void *ar )    /* 2 bytes at a time */
 {
-  register int ii ;
-   register TWObytes *tb = (TWObytes *)ar ;
-   register unsigned char tt ;
+   int ii ;
+   TWObytes *tb = (TWObytes *)ar ;
+   unsigned char tt ;
 
    for( ii=0 ; ii < n ; ii++ ){
      tt = tb[ii].a ; tb[ii].a = tb[ii].b ; tb[ii].b = tt ;
@@ -2695,9 +2695,9 @@ typedef struct { unsigned char a,b,c,d ; } FOURbytes ;
 
 void Swap_4bytes( int n , void *ar )    /* 4 bytes at a time */
 {
-   register int ii ;
-   register FOURbytes *tb = (FOURbytes *)ar ;
-   register unsigned char tt ;
+   int ii ;
+   FOURbytes *tb = (FOURbytes *)ar ;
+   unsigned char tt ;
 
    for( ii=0 ; ii < n ; ii++ ){
      tt = tb[ii].a ; tb[ii].a = tb[ii].d ; tb[ii].d = tt ;
@@ -2712,9 +2712,9 @@ typedef struct { unsigned char a,b,c,d , D,C,B,A ; } EIGHTbytes ;
 
 void Swap_8bytes( int n , void *ar )    /* 8 bytes at a time */
 {
-   register int ii ;
-   register EIGHTbytes *tb = (EIGHTbytes *)ar ;
-   register unsigned char tt ;
+   int ii ;
+   EIGHTbytes *tb = (EIGHTbytes *)ar ;
+   unsigned char tt ;
 
    for( ii=0 ; ii < n ; ii++ ){
      tt = tb[ii].a ; tb[ii].a = tb[ii].A ; tb[ii].A = tt ;
@@ -2732,9 +2732,9 @@ typedef struct { unsigned char a,b,c,d,e,f,g,h ,
 
 void Swap_16bytes( int n , void *ar )    /* 16 bytes at a time */
 {
-   register int ii ;
-   register SIXTEENbytes *tb = (SIXTEENbytes *)ar ;
-   register unsigned char tt ;
+   int ii ;
+   SIXTEENbytes *tb = (SIXTEENbytes *)ar ;
+   unsigned char tt ;
 
    for( ii=0 ; ii < n ; ii++ ){
      tt = tb[ii].a ; tb[ii].a = tb[ii].A ; tb[ii].A = tt ;