micropython/tests/inlineasm/asmfpcmp.py
= 5008972fef py/inlinethumb: Support for core floating point instructions.
Adds support for the following Thumb2 VFP instructions, via the option
MICROPY_EMIT_INLINE_THUMB_FLOAT:

vcmp
vsqrt
vneg
vcvt_f32_to_s32
vcvt_s32_to_f32
vmrs
vmov
vldr
vstr
vadd
vsub
vmul
vdiv
2015-04-19 15:47:05 +01:00

15 lines
257 B
Python

@micropython.asm_thumb # test vcmp, vmrs
def f(r0, r1):
vmov(s0, r0)
vcvt_f32_s32(s0, s0)
vmov(s1, r1)
vcvt_f32_s32(s1, s1)
vcmp(s1, s0)
vmrs(r0, FPSCR)
mov(r1, 28)
lsr(r0, r1)
print(f(0,1))
print(f(1,1))
print(f(1,0))