6.20.4 Floating-point to string conversion ¶

f>str-rdp ( rf +nr +nd +np – c-addr nr  ) gforth-0.6 “f-to-str-rdp”

Convert rf into a string at c-addr nr. The conversion rules and the meanings of nr +nd np are the same as for f.rdp (see Floating-point output). The result is in in the pictured numeric output buffer and will be destroyed by anything overwriting that buffer.

f>buf-rdp ( rf c-addr +nr +nd +np –  ) gforth-0.6 “f-to-buf-rdp”

Convert rf into a string at c-addr nr. The conversion rules and the meanings of nr nd np are the same as for f.rdp (see Floating-point output).

There is also a primitive used for implementing the higher-level FP-to-string and FP output words:

represent ( r c-addr u – n f1 f2 ) floating “represent”

Convert the decimal significand (aka mantissa) of r into a string in buffer c-addr u; n is the exponent, f1 is true if r is negative, and f2 is true if r is valid (a finite number in Gforth).