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Diffstat (limited to 'pseudocode-lib/README.md')
| -rw-r--r-- | pseudocode-lib/README.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/pseudocode-lib/README.md b/pseudocode-lib/README.md index dbdebf3..a12620a 100644 --- a/pseudocode-lib/README.md +++ b/pseudocode-lib/README.md @@ -35,7 +35,7 @@ The library provides `&`, six case-sensitive content comparisons, and these ordi - `ASC(CHAR)` and `ASC(STRING)` return the unsigned character or first-byte code; an empty string returns zero. - `CHR(Code)` returns a CHAR containing the low eight bits. `LENGTH(CHR(0))` is 1. - `NUM_TO_STR(INTEGER)` and `NUM_TO_STR(REAL)` convert INTEGER to decimal text and REAL to the shortest round-trip text (Python `repr` style, identical to OUTPUT: `2.0`, `0.1`, `1e-07`, `inf`). -- `STR_TO_NUM(S)` accepts STRING or CHAR and returns REAL through the same `parseNumber` helper as IS_NUM (`strtod`, full consumption). Invalid text and trailing junk throw `STR_TO_NUM: '<text>' is not a number`; overflow throws `... is out of the REAL range`; underflow is accepted. -- `IS_NUM(S)` agrees with STR_TO_NUM: full consumption by `strtod` and no overflow, without throwing. Leading whitespace is accepted; trailing whitespace, trailing junk, empty input, embedded NUL bytes, and overflowing values (`1e999`) are rejected. +- `STR_TO_NUM(S)` accepts STRING or CHAR and returns REAL through the same `parseNumber` helper as IS_NUM (`strtod`, full consumption, decimal text only: nan, inf/infinity and hexadecimal are rejected). Invalid text and trailing junk throw `STR_TO_NUM: '<text>' is not a number`; overflow throws `... is out of the REAL range`; underflow is accepted. +- `IS_NUM(S)` agrees with STR_TO_NUM: full consumption by `strtod` and no overflow, without throwing. Leading whitespace is accepted; nan, inf/infinity, hexadecimal, trailing whitespace, trailing junk, empty input, embedded NUL bytes, and overflowing values (`1e999`) are rejected. Library C++ exceptions print the user call line and can be caught with TRY/CATCH. Library functions follow the guide where specified; LEFT, STRING case conversion, byte-code and numeric-conversion functions remain compatibility extensions. |