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% CPSC-FUNCTION-STR_TO_NUM(7)
# NAME
cpsc-function-str_to_num - convert text to a real number
# SYNOPSIS
```text
STR_TO_NUM(text : STRING) RETURNS REAL
```
# DESCRIPTION
Provided by the standard string library, loaded and linked by default.
Return REAL, including for integer-looking text. The whole string must be consumed. Invalid text, trailing junk and values outside the REAL range throw a catchable exception. Use IS_NUM first to check numeric text without throwing for invalid input.
# EXAMPLE
```text
OUTPUT STR_TO_NUM("12.5")
```
# SEE ALSO
[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-is_num(7)](cpsc-function-is_num.7.md), [cpsc-function-num_to_str(7)](cpsc-function-num_to_str.7.md).
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