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math.h: make __FLOAT_BITS and __DOUBLE_BITS C89
[musl]
/
src
/
math
/
i386
/
atan2f.s
diff --git
a/src/math/i386/atan2f.s
b/src/math/i386/atan2f.s
index
08627e6
..
14b88ce
100644
(file)
--- a/
src/math/i386/atan2f.s
+++ b/
src/math/i386/atan2f.s
@@
-4,4
+4,16
@@
atan2f:
flds 4(%esp)
flds 8(%esp)
fpatan
- ret
+ fsts 4(%esp)
+ mov 4(%esp),%eax
+ add %eax,%eax
+ cmp $0x01000000,%eax
+ jae 1f
+ # subnormal x, return x with underflow
+ fnstsw %ax
+ and $16,%ax
+ jnz 1f
+ fld %st(0)
+ fmul %st(1)
+ fstps 4(%esp)
+1: ret