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manpage: -fcorrect-logic, -ftrue-empty-strings, -ffalse-empty-strings

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Wolfgang Bumiller 2012-12-20 20:56:08 +01:00
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doc/gmqcc.1
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@ -297,6 +297,31 @@ soption.
Normally vectors generate 4 defs, once for the vector, and once for Normally vectors generate 4 defs, once for the vector, and once for
its components with _x, _y, _z suffixes. This option its components with _x, _y, _z suffixes. This option
prevents components from being listed. prevents components from being listed.
.TP
.B -fcorrect-logic
Most QC compilers translate if(a_vector) directly as an IF on the
vector, which means only the x-component is checked. This causes all
non-float types to use an appropriate NOT instruction on all logic
operations and invert their use.
.in +4
.nf
if (a_vector) // becomes
if not(!a_vector)
// likewise
a = a_vector && a_float // becomes
a = !!a_vector && a_float
.fi
.in
.TP
.B -ftrue-empty-strings
An empty string is considered to be true everywhere. The NOT_S
instruction usually considers an empty string to be false, this option
effectively causes the unary not in strings to use NOT_F instead.
.TP
.B -ffalse-empty-strings
An empty string is considered to be false everywhere. This means loops
and if statements which depend on a string will perform a NOT_S
instruction on the string before using it.
.SH CONFIG .SH CONFIG
The configuration file is similar to regular .ini files. Comments The configuration file is similar to regular .ini files. Comments
start with hashtags or semicolons, sections are written in square start with hashtags or semicolons, sections are written in square