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Make further progress on non-x86 support

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Justine Tunney 2023-05-08 21:38:30 -07:00
parent aef9a69a60
commit 036b9a0002
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GPG key ID: BE714B4575D6E328
155 changed files with 2307 additions and 653 deletions
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32
libc/tinymath/sqrtf.c
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@ -44,13 +44,35 @@ static inline uint32_t mul32(uint32_t a, uint32_t b)
/* see sqrt.c for more detailed comments. */
/**
* Returns square root of 𝑥.
*/
float sqrtf(float x)
{
#ifdef __x86__
#ifdef __SSE2__
float res;
asm("sqrtss\t%1,%0" : "=x"(res) : "x"(x));
return res;
asm("sqrtss\t%1,%0" : "=x"(x) : "x"(x));
return x;
#elif defined(__aarch64__)
asm("fsqrt\t%s0,%s1" : "=w"(x) : "w"(x));
return x;
#elif defined(__powerpc64__)
asm("fsqrts\t%0,%1" : "=f"(x) : "f"(x));
return x;
#elif defined(__riscv) && __riscv_flen >= 32
asm("fsqrt.s\t%0,%1" : "=f"(x) : "f"(x));
return x;
#elif defined(__s390x__) && (defined(__HTM__) || __ARCH__ >= 9)
asm("sqebr\t%0,%1" : "=f"(x) : "f"(x));
return x;
#else
@ -121,5 +143,5 @@ float sqrtf(float x)
}
return y;
#endif
#endif /* __SSE2__ */
}