3 /* linker: atoi.o debug.o fdprintf.o parser.o -lm */
17 //#define BUFFER_SIZE 4096
18 #define BUFFER_SIZE 256
22 #define CEIL(x, y) (((x) + (y) - 1) / (y))
23 #define MIN(x, y) (((x) < (y)) ? (x) : (y))
24 #define MAX(x, y) (((x) > (y)) ? (x) : (y))
28 char *progname
= NULL
;
34 int fd
= ret
? stdfderr
: stdfdout
;
35 fdprintf (fd
, "usage: %s\n", progname
);
36 fdprintf (fd
, " -h : help message\n");
37 fdprintf (fd
, " -v : verbose level (%d)\n", verbose
);
44 int main (int argc
, char *argv
[])
46 char buffer
[BUFFER_SIZE
+ 1] = {0};
54 while (progname
[i
] != '\0') {
55 if ((progname
[i
] == '/') || (progname
[i
] == '\\')) {
63 /* argument processing */
66 char *arg
= *(++argv
);
68 PRINTERR ("%s: invalid option -- %s\n", progname
, arg
);
74 arg
= (arg
[2]) ? arg
+ 2 : (--argc
> 0) ? *(++argv
) : NULL
;
76 PRINTERR ("%s: missing verbose level\n", progname
);
83 return usage (c
!= 'h');
87 /* read from input stream */
89 while ((n
= read (stdfdin
, pt
, BUFFER_SIZE
- (pt
- buffer
))) != 0) {
90 VERBOSE (INFO
, PRINTOUT ("read %d bytes\n", n
));
92 if ((n
== 2) && (buffer
[0] == '.')) {
96 /* look for end of line */
97 for (i
= 0, j
= 0; i
< n
; i
++) {
98 if (buffer
[i
] == '\n') {
100 VERBOSE (INFO
, PRINTOUT ("line(%d): %s\n", j
, buffer
+ j
));
101 element_t
*element
= parser (buffer
, NULL
, 0);
102 if (element
== (void *)(-1)) {
103 VERBOSE (WARNING
, PRINTOUT ("error while parsing: %s\n", buffer
));
106 VERBOSE (INFO
, print_element (element
, 0));
107 PRINTOUT ("=> %f\n", evaluate_element (element
));
115 /* keep remainding */
117 for (i
= 0; i
< n
- j
; i
++) {
118 buffer
[i
] = buffer
[i
+ j
];
121 for (i
= n
- j
; i
< BUFFER_SIZE
; i
++) {
131 // test: calc.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
132 // test: calc.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }'
133 // test: calc.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
134 // test: echo "1 + 2" | calc.exe | grep -q '=> 3'
135 // test: echo "1 - 2" | calc.exe | grep -q '=> -1'
136 // test: echo "2 * 3" | calc.exe | grep -q '=> 6'
137 // test: echo "1 / 2" | calc.exe | grep -q '=> 5e-1'
138 // test: echo "2 ^ 3" | calc.exe | grep -q '=> 8'
139 // test: echo "1e-1 + 2.34e3" | calc.exe | grep -q '=> 2.3401'
140 // test: echo "sqrt (2)" | calc.exe | grep -q '=> 1.414213'
141 // test: echo "pow (2, 3)" | calc.exe | grep -q '=> 8'
142 // test: echo "cos (2)" | calc.exe | grep -q '=> -4.161468e-1'
143 // test: echo "sin (2)" | calc.exe | grep -q '=> 9.092974e-1'
144 // test: echo "atan (2)" | calc.exe | grep -q '=> 1.107148'
145 // test: echo "exp (2)" | calc.exe | grep -q '=> 7.389056'
146 // test: echo "log (2)" | calc.exe | grep -q '=> 6.931471e-1'
147 // test: echo "2 + 3 - 4" | calc.exe | grep -q '=> 1'
148 // test: echo "1 + cos (2 - 3)" | calc.exe | grep -q '=> 1.54030'
149 // test: echo "cos (1 / 2) * 3" | calc.exe | grep -q '=> 2.63274'
150 // test: echo "1 + 4 * (2 - 3)" | calc.exe | grep -q '=> -3'
151 // test: echo "(2 - 3) / 4" | calc.exe | grep -q '=> -2.5e-1'
152 // test: echo "pow (8 - 3, 4 / 3)" | calc.exe | grep -q '=> 8.549879'
153 // test: echo "1 + -2" | calc.exe | grep -q '=> -1'
154 // test: echo "1 - +2" | calc.exe | grep -q '=> -1'
155 // test: echo "-1 + +2" | calc.exe | grep -q '=> 1'
156 // test: echo "-1+2" | calc.exe | grep -q '=> 1'
157 // test: echo "1-2" | calc.exe | grep -q '=> -1'
158 // test: echo "1 * 2 / 3 + 4" | calc.exe | grep -q '=> 4.666666'
159 // test: echo "2 ^ 3 * 4 + 5" | calc.exe | grep -q '=> 3.7e1'
160 // test: echo "2 + 3 * 4 ^ 5" | calc.exe | grep -q '=> 3.074e3'
161 // test: echo "2 ^ 3 * 4 + cos(5/6)" | calc.exe | grep -q '=> 3.267241e1'
163 /* vim: set ts=4 sw=4 et: */