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lib/libm/math: Remove implementations of float conversion functions. 

These implementations are incorrect (eg f2d and d2f don't handle special
values like 0.0) and proper versions can be provided by libgcc (or
equivalent depending on the toolchain).

libgcc is now linked with the stmhal port so that library will provide
these functions from now on.
This commit is contained in:
Damien George 2017-06-14 17:18:23 +10:00
parent c064f0a36a
commit 3bedff0b3c
1 changed files with 0 additions and 50 deletions
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50
lib/libm/math.c
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@ -36,56 +36,6 @@ typedef union {
};
} float_s_t;
typedef union {
double d;
struct {
uint64_t m : 52;
uint64_t e : 11;
uint64_t s : 1;
};
} double_s_t;
#if defined(__thumb__)
double __attribute__((pcs("aapcs"))) __aeabi_i2d(int32_t x) {
return (float)x;
}
// TODO
long long __attribute__((pcs("aapcs"))) __aeabi_f2lz(float x) {
return (long)x;
}
double __attribute__((pcs("aapcs"))) __aeabi_f2d(float x) {
float_s_t fx={0};
double_s_t dx={0};
fx.f = x;
dx.s = (fx.s);
dx.e = (fx.e-127+1023) & 0x7FF;
dx.m = fx.m;
dx.m <<=(52-23); // left justify
return dx.d;
}
float __attribute__((pcs("aapcs"))) __aeabi_d2f(double x) {
float_s_t fx={0};
double_s_t dx={0};
dx.d = x;
fx.s = (dx.s);
fx.e = (dx.e-1023+127) & 0xFF;
fx.m = (dx.m>>(52-23)); // right justify
return fx.f;
}
double __aeabi_dmul(double x , double y) {
return 0.0;
}
#endif // defined(__thumb__)
#ifndef NDEBUG
float copysignf(float x, float y) {
float_s_t fx={.f = x};