Builtin constant_p
WebFeb 25, 2012 · 3. I want to use gcc to do some compile-time checking on function inputs if the compiler knows that they are constants. I have a solution that very almost works, and as far as I can see, it should work. Note: __builtin_constant_p (expression) is supposed to returns whether an expression is known to be a constant at compile time.
Builtin constant_p
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WebAnd since "byteswap: try to avoid __builtin_constant_p gcc bug" is not in Linus' tree, hopefully we can have this fix applied soon. > From: Josh Poimboeuf > Subject: [PATCH] compiler-gcc: require gcc 4.8 for powerpc __builtin_bswap16() > > gcc support for __builtin_bswap16() was supposedly added … WebMay 29, 2014 · A built-in function may choose, for example, not to evaluate its arguments: int main () { int i = 0; __builtin_constant_p (++i); // checks whether ++i is a constant expression // does not evaluate ++i return i; // returns 0 } This is because a built-in function can be transformed by the compiler into something else, that does not actually need ...
Web135 Likes, 1 Comments - Aspire Official (@aspirecigs) on Instagram: "The Aspire Cyber S features a built-in 700mAh battery and provides a reliable and constant 3.4V o..." Aspire Official on Instagram: "The Aspire Cyber S features a built-in 700mAh battery and provides a reliable and constant 3.4V output. WebApparently the powerpc version (gcc-4.6 and 4.7) just mapped to the lhbrx/sthbrx instructions, so it ended up not being a constant, though the intent of the patch was mainly to add support for the builtin to x86.
WebComposite types ¶. The interpreter distinguishes two kinds of composite types: arrays and records (structs and classes). Unions are represented as records, except at most a … WebIf __builtin_constant_p () returns 0, the value is not a compile-time constant in the sense that gcc (1) was unable to determine whether the value is constant or not. EXAMPLES …
WebThe function is closely related to the concept of "constant folding" used by modern optimizing compilers. If the value is known to be a compile-time constant, a value 1 is returned. If __builtin_constant_p () returns 0, the value is not a compile-time constant in the sense that gcc (1) was unable to determine whether the value is constant or not.
Webpymor.discretizers.builtin.cg ¶. This module provides some operators for continuous finite element discretizations. Module Contents¶ pymor.discretizers.builtin.cg. spicher washer and dryerWebPerhaps this would suffice. The following excerpt from the documentation for __builtin_constant_p leads me to believe it will. "You can use the built-in function … spichty agWebComposite types ¶. The interpreter distinguishes two kinds of composite types: arrays and records (structs and classes). Unions are represented as records, except at most a single field can be marked as active. The contents of inactive fields are kept until they are reactivated and overwritten. Complex numbers ( _Complex) and vectors ... spich lasertagWebJan 29, 2024 · Have you looked at the online docs for __builtin_constant_p? It can be any sort of constant, not just a pointer. It is usually used inside an inline function, in the … spichty célineWebThe macro asserts that the pointer has a suitable. * alignment for type "t". This exists for places where otherwise "-Wcast-align=strict" would issue a. * warning or if you want to assert that the cast gives a pointer of suitable alignment. */. /* … spi chip_selectWebDec 9, 2024 · It is built on the back of Bill Wendling's work for __builtin_constant_p(). More tests to come, but early feedback is appreciated. I plan to implement warnings for … spiciest cheetosWebSep 4, 2024 · A const-qualified variable is not a constant expression in C, but GCC does not document __builtin_constant_p as determining if the argument is a constant … spiciest books on kindle unlimited