**diff options**

author | H. Peter Anvin <hpa@linux.intel.com> | 2010-05-07 13:21:20 -0700 |
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committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-05-07 13:21:20 -0700 |

commit | 19cbe0c1c4da84cab01bf58de16621ecca46bd58 (patch) | |

tree | dbbf95a44dc052e768c43fb049bc23b0a111c3b9 | |

parent | c8d8a13cde4de4275703dba0116567820ebaf2b1 (diff) | |

download | nasm-test-19cbe0c1c4da84cab01bf58de16621ecca46bd58.tar.gz nasm-test-19cbe0c1c4da84cab01bf58de16621ecca46bd58.tar.xz nasm-test-19cbe0c1c4da84cab01bf58de16621ecca46bd58.zip |

nasmdoc: document octal/binary floating-point

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

-rw-r--r-- | doc/nasmdoc.src | 14 |

1 files changed, 9 insertions, 5 deletions

diff --git a/doc/nasmdoc.src b/doc/nasmdoc.src index b77fa674..8b6fb2dc 100644 --- a/doc/nasmdoc.src +++ b/doc/nasmdoc.src @@ -1619,11 +1619,15 @@ Floating-point constants are expressed in the traditional form: digits, then a period, then optionally more digits, then optionally an \c{E} followed by an exponent. The period is mandatory, so that NASM can distinguish between \c{dd 1}, which declares an integer constant, -and \c{dd 1.0} which declares a floating-point constant. NASM also -support C99-style hexadecimal floating-point: \c{0x}, hexadecimal -digits, period, optionally more hexadeximal digits, then optionally a -\c{P} followed by a \e{binary} (not hexadecimal) exponent in decimal -notation. +and \c{dd 1.0} which declares a floating-point constant. + +NASM also support C99-style hexadecimal floating-point: \c{0x}, +hexadecimal digits, period, optionally more hexadeximal digits, then +optionally a \c{P} followed by a \e{binary} (not hexadecimal) exponent +in decimal notation. As an extension, NASM additionally supports the +\c{0h} and \c{$} prefixes for hexadecimal, as well binary and octal +floating-point, using the \c{0b} or \c{0y} and \c{0o} or \c{0q} +prefixes, respectively. Underscores to break up groups of digits are permitted in floating-point constants as well. |