carta
ceill(3)

ceill3

Smallest integral value greater than or equal to x

Part of ceil(3).

Usage

double

float

long double

Library

Math Library (libm, -lm)

Overview

The ceil(), ceilf() and ceill() functions return the smallest integral value greater than or equal to x, expressed as a floating-point number.

History

  • FreeBSD 16.0-CURRENT (2026-10-27) to FreeBSD 15.0-RELEASE: the text shown here
  • FreeBSD 14.5-RELEASE to FreeBSD 13.3-RELEASE
  • FreeBSD 13.2-RELEASE to FreeBSD 13.0-RELEASE
  • FreeBSD 12.4-RELEASE
  • FreeBSD 12.3-RELEASE
  • FreeBSD 12.2-RELEASE
  • FreeBSD 12.1-RELEASE
  • FreeBSD 12.0-RELEASE
  • FreeBSD 11.4-RELEASE
  • FreeBSD 11.3-RELEASE
  • FreeBSD 11.2-RELEASE
  • FreeBSD 11.1-RELEASE
  • FreeBSD 11.0-RELEASE
  • FreeBSD 10.4-RELEASE
  • FreeBSD 10.3-RELEASE
  • FreeBSD 10.2-RELEASE
  • FreeBSD 10.1-RELEASE
  • FreeBSD 10.0-RELEASE
  • FreeBSD 9.3-RELEASE
  • FreeBSD 9.2-RELEASE
  • FreeBSD 9.1-RELEASE
  • FreeBSD 9.0-RELEASE
  • FreeBSD 8.4-RELEASE
  • FreeBSD 8.3-RELEASE
  • FreeBSD 8.2-RELEASE
  • FreeBSD 8.1-RELEASE
  • FreeBSD 8.0-RELEASE
  • FreeBSD 7.4-RELEASE
  • FreeBSD 7.3-RELEASE
  • FreeBSD 7.2-RELEASE
  • FreeBSD 7.1-RELEASE
  • FreeBSD 7.0-RELEASE
  • FreeBSD 6.4-RELEASE
  • FreeBSD 6.3-RELEASE
  • FreeBSD 6.2-RELEASE to FreeBSD 6.0-RELEASE
  • FreeBSD 5.5-RELEASE to FreeBSD 5.4-RELEASE

Standards

The ceil() function conforms to ISO/IEC 9899:1990 (“ISO C90”). The ceilf() and ceill() functions conform to ISO/IEC 9899:1999 (“ISO C99”).

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.