96 int isInteger(const char *z){  in isInteger()  argument
97   while( z[0]>='0' && z[0]<='9' ) z++;  in isInteger()
98   return z[0]==0;  in isInteger()
101 int isFloat(const char *z){  in isFloat()  argument
103   while( ((c=z[0])>='0' && c<='9') || c=='.' || c=='E' || c=='e'  in isFloat()
104           || c=='+' || c=='-'  ) z++;  in isFloat()
105   return z[0]==0;  in isFloat()
128     const char *z = argv[i];  in main()  local
129     if( strcmp(z,"+")==0 ){  in main()
134     }else if( strcmp(z,"x")==0 ){  in main()
139     }else if( strcmp(z,"dup")==0 ){  in main()
144     }else if( strcmp(z,"log")==0 ){  in main()
146     }else if( strcmp(z,"nlogn")==0 ){  in main()
148     }else if( strcmp(z,"inv")==0 ){  in main()
150     }else if( z[0]=='^' ){  in main()
151       a[n++] = (LogEst)atoi(z+1);  in main()
152     }else if( isInteger(z) ){  in main()
153       a[n++] = logEstFromInteger(atoll(z));  in main()
154     }else if( isFloat(z) && z[0]!='-' ){  in main()
155       a[n++] = logEstFromDouble(atof(z));  in main()