---
name: "CamlinternalFormat"
section: "3o"
platform: "linux"
package: "ocaml"
version: "5.5.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/CamlinternalFormat"
---

# CamlinternalFormat(3o)

no description

## NAME

CamlinternalFormat - no description

## Module

Module   CamlinternalFormat

## Documentation

Module **CamlinternalFormat**\
  :  **sig end**

*val is\_in\_char\_set* :  **CamlinternalFormatBasics.char\_set -\> char -\> bool**

*val rev\_char\_set* :  **CamlinternalFormatBasics.char\_set -\> CamlinternalFormatBasics.char\_set**

*type mutable\_char\_set* =  **bytes**

*val create\_char\_set* :  **unit -\> mutable\_char\_set**

*val add\_in\_char\_set* :  **mutable\_char\_set -\> char -\> unit**

*val freeze\_char\_set* :  **mutable\_char\_set -\> CamlinternalFormatBasics.char\_set**

*type* **('a, 'b, 'c, 'd, 'e, 'f)** *param\_format\_ebb* =\
  \| Param\_format\_EBB **:** **('x -\> 'a0, 'b0, 'c0, 'd0, 'e0, 'f0) CamlinternalFormatBasics.fmt** **-\>** **('a0, 'b0, 'c0, 'd0, 'e0, 'f0) param\_format\_ebb**

*val param\_format\_of\_ignored\_format* :  **('a, 'b, 'c, 'd, 'y, 'x) CamlinternalFormatBasics.ignored -\>** **('x, 'b, 'c, 'y, 'e, 'f) CamlinternalFormatBasics.fmt -\>** **('a, 'b, 'c, 'd, 'e, 'f) param\_format\_ebb**

*type* **('b, 'c)** *acc\_formatting\_gen* =\
  \| Acc\_open\_tag **of** **('b, 'c) acc**\
  \| Acc\_open\_box **of** **('b, 'c) acc**

*type* **('b, 'c)** *acc* =\
  \| Acc\_formatting\_lit **of** **('b, 'c) acc \* CamlinternalFormatBasics.formatting\_lit**\
  \| Acc\_formatting\_gen **of** **('b, 'c) acc** **\* ('b, 'c) acc\_formatting\_gen**\
  \| Acc\_string\_literal **of** **('b, 'c) acc \* string**\
  \| Acc\_char\_literal **of** **('b, 'c) acc \* char**\
  \| Acc\_data\_string **of** **('b, 'c) acc \* string**\
  \| Acc\_data\_char **of** **('b, 'c) acc \* char**\
  \| Acc\_delay **of** **('b, 'c) acc \* ('b -\> 'c)**\
  \| Acc\_flush **of** **('b, 'c) acc**\
  \| Acc\_invalid\_arg **of** **('b, 'c) acc \* string**\
  \| End\_of\_acc

*type* **('a, 'b)** *heter\_list* =\
  \| Cons **:** **'c \* ('a0, 'b0) heter\_list** **-\>** **('c -\> 'a0, 'b0) heter\_list**\
  \| Nil **:** **('b1, 'b1) heter\_list**

*type* **('b, 'c, 'e, 'f)** *fmt\_ebb* =\
  \| Fmt\_EBB **:** **('a, 'b0, 'c0, 'd, 'e0, 'f0) CamlinternalFormatBasics.fmt** **-\>** **('b0, 'c0, 'e0, 'f0) fmt\_ebb**

*val make\_printf* :  **(('b, 'c) acc -\> 'd) -\>** **('b, 'c) acc -\>** **('a, 'b, 'c, 'c, 'c, 'd) CamlinternalFormatBasics.fmt -\> 'a**

*val make\_iprintf* :  **('s -\> 'f) -\>** **'s -\> ('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.fmt -\> 'a**

*val output\_acc* :  **out\_channel -\>** **(out\_channel, unit) acc -\> unit**

*val bufput\_acc* :  **Buffer.t -\> (Buffer.t, unit) acc -\> unit**

*val strput\_acc* :  **Buffer.t -\> (unit, string) acc -\> unit**

*module Args :* **sig end**

*val make\_lprintf* :  **(('b, 'c) acc -\> 'f) -\>** **('b, 'c) acc -\>** **('a, 'b, 'c, 'c, 'c, 'f) CamlinternalFormatBasics.fmt -\>** **('a, 'f) Args.t -\> 'f**

*val type\_format* :  **('x, 'b, 'c, 't, 'u, 'v) CamlinternalFormatBasics.fmt -\>** **('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.fmtty -\>** **('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.fmt**

*val fmt\_ebb\_of\_string* :  **?legacy\_behavior:bool -\>** **string -\> ('b, 'c, 'e, 'f) fmt\_ebb**

*val format\_of\_string\_fmtty* :  **string -\>** **('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.fmtty -\>** **('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.format6**

*val format\_of\_string\_format* :  **string -\>** **('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.format6 -\>** **('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.format6**

*val char\_of\_iconv* :  **CamlinternalFormatBasics.int\_conv -\> char**

*val string\_of\_formatting\_lit* :  **CamlinternalFormatBasics.formatting\_lit -\> string**

*val string\_of\_fmtty* :  **('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.fmtty -\> string**

*val string\_of\_fmt* :  **('a, 'b, 'c, 'd, 'e, 'f) CamlinternalFormatBasics.fmt -\> string**

*val open\_box\_of\_string* :  **string -\> int \* CamlinternalFormatBasics.block\_type**

*val symm* :  **('a1, 'b1, 'c1, 'd1, 'e1, 'f1, 'a2, 'b2, 'c2, 'd2, 'e2, 'f2)** **CamlinternalFormatBasics.fmtty\_rel -\>** **('a2, 'b2, 'c2, 'd2, 'e2, 'f2, 'a1, 'b1, 'c1, 'd1, 'e1, 'f1)** **CamlinternalFormatBasics.fmtty\_rel**

*val trans* :  **('a1, 'b1, 'c1, 'd1, 'e1, 'f1, 'a2, 'b2, 'c2, 'd2, 'e2, 'f2)** **CamlinternalFormatBasics.fmtty\_rel -\>** **('a2, 'b2, 'c2, 'd2, 'e2, 'f2, 'a3, 'b3, 'c3, 'd3, 'e3, 'f3)** **CamlinternalFormatBasics.fmtty\_rel -\>** **('a1, 'b1, 'c1, 'd1, 'e1, 'f1, 'a3, 'b3, 'c3, 'd3, 'e3, 'f3)** **CamlinternalFormatBasics.fmtty\_rel**

*val recast* :  **('a1, 'b1, 'c1, 'd1, 'e1, 'f1) CamlinternalFormatBasics.fmt -\>** **('a1, 'b1, 'c1, 'd1, 'e1, 'f1, 'a2, 'b2, 'c2, 'd2, 'e2, 'f2)** **CamlinternalFormatBasics.fmtty\_rel -\>** **('a2, 'b2, 'c2, 'd2, 'e2, 'f2) CamlinternalFormatBasics.fmt**