top: let's eliminate some additional compiler warnings

This patch eliminates those warnings referenced below.
They are sometimes associated with an obscure #define.

We'll also corrrect one header file function prototype
so it will aggree with the actual function definition.

Reference(s):
top.c: In function 'adj_geometry':
top.c:1874:20: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare]
 1874 |    if (Screen_cols < DOUBLE_limit) Curwin->rc.double_up = 0;
      |                    ^
top.c: In function 'zap_fieldstab':
top.c:2359:26: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
 2359 |    if (wtab[EU_CPN].wmin < digits) {
      |                          ^
top.c:2365:26: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
 2365 |    if (wtab[EU_NMA].wmin < digits) {
      |                          ^
top.c: In function 'keys_summary':
top.c:5128:45: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare]
 5128 |          if (w->rc.double_up && Screen_cols < DOUBLE_limit) {
      |                                             ^
top.c: In function 'sum_tics':
top.c:5605:22: warning: unused variable 'num_syst' [-Wunused-variable]
 5605 |    int ix, num_user, num_syst;
      |                      ^~~~~~~~
top.c:5605:12: warning: unused variable 'num_user' [-Wunused-variable]
 5605 |    int ix, num_user, num_syst;
      |            ^~~~~~~~

Signed-off-by: Jim Warner <james.warner@comcast.net>

top/top.c

@@ -215,9 +215,9 @@ static char Double_sp[] =  " ~1 ~6 ";
 #define DOUBLE_space  (sizeof(Double_sp) - 5)    // 1 for null, 4 unprintable
 #endif
 #ifdef TOG4_NOTRUNC
- #define DOUBLE_limit  (160 + DOUBLE_space)
+ #define DOUBLE_limit  (int)( 160 + DOUBLE_space )
 #else
- #define DOUBLE_limit  ( 80 )
+ #define DOUBLE_limit  (int)( 80 )
 #endif
 
         /* Support for the new library API -- acquired (if necessary)
@@ -2307,9 +2307,8 @@ static void zap_fieldstab (void) {
    } wtab[EU_MAXPFLGS];
 #endif
    static int once;
-   unsigned digits;
+   int i, digits;
    char buf[8];
-   int i;
 
    if (!once) {
       Fieldstab[EU_CPN].width = 1;
@@ -2317,7 +2316,7 @@ static void zap_fieldstab (void) {
       Fieldstab[EU_PID].width = Fieldstab[EU_PPD].width
          = Fieldstab[EU_PGD].width = Fieldstab[EU_SID].width
          = Fieldstab[EU_TGD].width = Fieldstab[EU_TPG].width = 5;
-      if (5 < (digits = procps_pid_length())) {
+      if (5 < (digits = (int)procps_pid_length())) {
          if (10 < digits) error_exit(N_txt(FAIL_widepid_txt));
          Fieldstab[EU_PID].width = Fieldstab[EU_PPD].width
             = Fieldstab[EU_PGD].width = Fieldstab[EU_SID].width
@@ -2355,13 +2354,13 @@ static void zap_fieldstab (void) {
    }
 
 #ifdef WIDEN_COLUMN
-   digits = (unsigned)snprintf(buf, sizeof(buf), "%u", (unsigned)Cpu_cnt);
+   digits = snprintf(buf, sizeof(buf), "%d", Cpu_cnt);
    if (wtab[EU_CPN].wmin < digits) {
       if (5 < digits) error_exit(N_txt(FAIL_widecpu_txt));
       wtab[EU_CPN].wmin = digits;
       Fieldstab[EU_CPN].width = maX(EU_CPN);
    }
-   digits = (unsigned)snprintf(buf, sizeof(buf), "%u", (unsigned)Numa_node_tot);
+   digits = snprintf(buf, sizeof(buf), "%d", Numa_node_tot);
    if (wtab[EU_NMA].wmin < digits) {
       wtab[EU_NMA].wmin = digits;
       Fieldstab[EU_NMA].width = maX(EU_NMA);
@@ -2375,12 +2374,12 @@ static void zap_fieldstab (void) {
       }
    }
 #else
-   digits = (unsigned)snprintf(buf, sizeof(buf), "%u", (unsigned)Cpu_cnt);
+   digits = snprintf(buf, sizeof(buf), "%d", Cpu_cnt);
    if (1 < digits) {
       if (5 < digits) error_exit(N_txt(FAIL_widecpu_txt));
       Fieldstab[EU_CPN].width = digits;
    }
-   digits = (unsigned)snprintf(buf, sizeof(buf), "%u", (unsigned)Numa_node_tot);
+   digits = snprintf(buf, sizeof(buf), "%d", Numa_node_tot);
    if (2 < digits)
       Fieldstab[EU_NMA].width = digits;
 
@@ -5602,9 +5601,13 @@ static int sum_tics (struct stat_stack *this, const char *pfx, int nobuf) {
       { "%-.*s~4", "%-.*s~6", Graph_blks }
    };
    SIC_t idl_frme, tot_frme;
-   int ix, num_user, num_syst;
    float pct_user, pct_syst, scale;
    char user[SMLBUFSIZ], syst[SMLBUFSIZ], dual[MEDBUFSIZ];
+#ifndef QUICK_GRAPHS
+   int ix, num_user, num_syst;
+#else
+   int ix;
+#endif
 
    idl_frme = rSv(stat_IL);
    tot_frme = rSv(stat_SUM_TOT);
@@ -5621,9 +5624,9 @@ static int sum_tics (struct stat_stack *this, const char *pfx, int nobuf) {
          , (float)rSv(stat_SI) * scale, (float)rSv(stat_ST) * scale), nobuf);
    } else {
       ix = Curwin->rc.graph_cpus - 1;
-#ifndef QUICK_GRAPHS
       pct_user = (float)rSv(stat_SUM_USR) * scale,
       pct_syst = (float)rSv(stat_SUM_SYS) * scale;
+#ifndef QUICK_GRAPHS
       num_user = (int)((pct_user * Graph_adj) + .5),
       num_syst = (int)((pct_syst * Graph_adj) + .5);
       if (num_user + num_syst > Graph_len) num_syst = Graph_len - num_user;

top/top.h

@@ -677,7 +677,7 @@ typedef struct WIN_t {
 //atic void          wins_stage_2 (void);
 //atic inline int    wins_usrselect (const WIN_t *q, int idx);
 /*------  Forest View support  -------------------------------------------*/
-//atic void          forest_adds (const int self, unsigned level);
+//atic void          forest_adds (const int self, int level);
 //atic void          forest_begin (WIN_t *q);
 //atic void          forest_config (WIN_t *q);
 //atic inline const char *forest_display (const WIN_t *q, int idx);