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C11The C Standard, subclause 6.7.4 (Function Specifiers), p3 paragraph 3, says:

An inline definition of a function with external linkage shall not contain a definition of a modifiable object with static or thread storage duration, and shall not contain a reference to an identifier with internal linkage.

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static const double C = -0x16c087e80f1e27.0p-62;  /* -0.00138867637746099294692 */

extern inline void func(double a) {
  double b;
  b = a * C;
  /* ... */
}

Compliant Solution

This compliant solution does not declare the constant to be {[static}}.

const double C = -0x16c087e80f1e27.0p-62;  /* -0.00138867637746099294692 */

extern inline void func(double a) {
  double b;
  b = a * C;
  /* ... */
}

Risk Assessment

Bibliography

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