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add constants

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This commit is contained in:
James McKaskill 2013-05-12 17:21:56 -04:00
parent 2eb6628ae4
commit 93f695f77c
4 changed files with 300 additions and 212 deletions
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18
capn.h
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@ -334,23 +334,33 @@ CAPN_INLINE int capn_write64(capn_ptr p, int off, uint64_t val) {
}
}
union capn_conv_f32 {
uint32_t u;
float f;
};
union capn_conv_f64 {
uint64_t u;
double f;
};
CAPN_INLINE float capn_to_f32(uint32_t v) {
union { float f; uint32_t u;} u;
union capn_conv_f32 u;
u.u = v;
return u.f;
}
CAPN_INLINE double capn_to_f64(uint64_t v) {
union { float f; uint64_t u;} u;
union capn_conv_f64 u;
u.u = v;
return u.f;
}
CAPN_INLINE uint32_t capn_from_f32(float v) {
union { float f; uint32_t u;} u;
union capn_conv_f32 u;
u.f = v;
return u.u;
}
CAPN_INLINE uint64_t capn_from_f64(double v) {
union { float f; uint64_t u;} u;
union capn_conv_f64 u;
u.f = v;
return u.u;
}