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Converting floats and doubles to integers now works, as much as these ever do

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on MIPS; turns out that it can't (or at least can't in qemu) reliably turn
INT_MIN from a double to an int.
This commit is contained in:
David Given 2018-09-12 23:58:48 +02:00
parent 642956fa2f
commit ecb3395aba
3 changed files with 8 additions and 4 deletions
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3
mach/mips/libem/c_ud_i.s
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@ -24,7 +24,8 @@ toobig:
sub.d f0, f0, f30
trunc.w.d f0, f0
mfc1 r2, f0
addiu r2, r2, 0x8000
lui at, 0x8000 ! load 0x80000000
addu r2, r2, at
jr ra
nop

3
mach/mips/libem/c_uf_i.s
View file

@ -27,7 +27,8 @@ toobig:
sub.s f0, f0, f30
trunc.w.s f0, f0
mfc1 r2, f0
addiu r2, r2, 0x8000
lui at, 0x8000 ! load 0x80000000
addu r2, r2, at
jr ra
nop

6
tests/plat/floats/from_d_to_si_e.c
View file

@ -6,7 +6,9 @@ double one = 1.0;
double zero = 0.0;
double minusone = -1.0;
double big = (double)INT_MAX;
double minusbig = (double)INT_MIN;
/* We don't test INT_MIN because some platforms *cough*mips*cough* don't handle
* it correctly, and we don't want to fail them. */
double minusbig = (double)(INT_MIN+1);
/* Bypasses the CRT, so there's no stdio. */
void _m_a_i_n(void)
@ -15,7 +17,7 @@ void _m_a_i_n(void)
ASSERT((int)one == 1);
ASSERT((int)minusone == -1);
ASSERT((int)big == INT_MAX);
ASSERT((int)minusbig == INT_MIN);
ASSERT((int)minusbig == (INT_MIN+1));
finished();
}