package core

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Industrial strength alternative to OCaml's standard library

Install

Dune Dependency

github.com Readme Changelog MIT License Edit opam file Versions (13)

Authors

J

Jane Street Group, LLC

Maintainers

J

Jane Street developers

Sources

v0.14.1.tar.gz

sha256=8c158c12345d36a5cdd71081728f4317b2b04c09eb4126b6de00c482a6fec2a0

md5=b11f58205953d84cedb0003efcdab231

doc/core.iobuf_unix/Iobuf_unix/Expert/index.html

Module `Iobuf_unix.Expert`

The Expert module is for building efficient out-of-module Iobuf abstractions.

val fillf_float : 
  (Core.read_write, Iobuf.seek) Iobuf.t ->
  c_format:string ->
  float ->
  [ `Ok | `Truncated | `Format_error ]

fillf_float t ~c_format float attempts to fill a string representation of a float into an iobuf at the current position. The representation is specified by standard C printf formatting codes.

The highest available byte of the window is unusable and will be set to 0 in the case that a properly formatted string would otherwise fully fill the window.

If there is enough room in (window - 1) to format the float as specified then `Ok is returned and the window is advanced past the written bytes.

If there is not enough room in (window - 1) to format as specified then `Truncated is returned.

If C snprintf indicates a format error then `Format_error is returned.

Operation is unsafe if a format code not intended for a double precision float is used (e.g., %s) or if more than one format specifier is provided, etc.

val to_iovec_shared : 
  ?pos:int ->
  ?len:int ->
  (_, _) Iobuf.t ->
  Core.Bigstring.t Core.Unix.IOVec.t