tTh/FloatImg
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better handling of float cli arguments

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Tonton Th
2019-09-16 12:28:47 +02:00
parent b85b66caed
commit c3bc39750d
4 changed files with 39 additions and 8 deletions
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22
funcs/t.c
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@@ -8,20 +8,28 @@
#include "../floatimg.h"
int fimg_pnm_infos(char *);
/* --------------------------------------------------------------------- */
int main(int argc, char *argv[])
{
int foo;
char *infile = "foo.pnm";
double dval;
char *str;
pnm_init(&argc, argv);
str = "12.34"; dval = 0.0;
foo = parse_double(str, &dval);
printf("%-10s -> %3d %g\n", str, foo, dval);
if (2 == argc) infile = argv[1];
str = "12e4"; dval = 0.0;
foo = parse_double(str, &dval);
printf("%-10s -> %3d %g\n", str, foo, dval);
foo = fimg_pnm_infos(infile);
fprintf(stderr, "got %d\n", foo);
str = "5s"; dval = 0.0;
foo = parse_double(str, &dval);
printf("%-10s -> %3d %g\n", str, foo, dval);
str = "PORN"; dval = 0.0;
foo = parse_double(str, &dval);
printf("%-10s -> %3d %g\n", str, foo, dval);
return 0;
}

13
funcs/utils.c
View File

@@ -29,3 +29,16 @@ if (2 != foo) {
return 2;
}
/* --------------------------------------------------------------------- */
int parse_double(char *str, double *dptr)
{
double value;
int foo;
foo = sscanf(str, "%lf", &value);
if (1 == foo) {
*dptr = value;
return 1;
}
return -1;
}
/* --------------------------------------------------------------------- */