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Floating point parsing support for scanf family (#924)

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Matheus Moreira 2023-11-18 07:25:36 -03:00 • committed by GitHub
parent 8caf1b48a9
commit 3ac473df3b
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3 changed files with 331 additions and 4 deletions
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examples/parsefloat.c Normal file
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#include <stdio.h>
#define PARSE_AND_PRINT(type, scan_fmt, print_fmt, str) \
do { \
type val; int ret; \
ret = sscanf(str, scan_fmt, &val); \
printf("\"%s\" => " print_fmt " = %d\n", str, val, ret); \
} while (0)
int main()
{
PARSE_AND_PRINT(float, "%f", "%f", "0.3715");
PARSE_AND_PRINT(float, "%f", "%f", ".3715");
PARSE_AND_PRINT(float, "%f", "%f", "3715");
PARSE_AND_PRINT(float, "%f", "%f", "111.11");
PARSE_AND_PRINT(float, "%f", "%f", "-2.22");
PARSE_AND_PRINT(float, "%f", "%f", "Nan");
PARSE_AND_PRINT(float, "%f", "%f", "nAn(2)");
PARSE_AND_PRINT(float, "%f", "%f", "-NAN(_asdfZXCV1234_)");
PARSE_AND_PRINT(float, "%f", "%f", "-nan");
PARSE_AND_PRINT(float, "%f", "%f", "+nan");
PARSE_AND_PRINT(float, "%f", "%f", "inF");
PARSE_AND_PRINT(float, "%f", "%f", "iNfINiTy");
PARSE_AND_PRINT(float, "%f", "%f", "+inf");
PARSE_AND_PRINT(float, "%f", "%f", "-inf");
PARSE_AND_PRINT(float, "%f", "%f", "0X1.BC70A3D70A3D7P+6");
PARSE_AND_PRINT(float, "%f", "%f", "1.18973e+4932zzz");
PARSE_AND_PRINT(float, "%f", "%.10f", " -0.0000000123junk");
PARSE_AND_PRINT(float, "%f", "%f", "junk");
return 0;
}