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pico-sdk/test/pico_float_test/pico_double_test.c
Graham Sanderson 574fdee37b
Fixup divider save_restore for floating point too; improve tests (#405) 
- The divider state needs to be saved for __aeabi_ddiv, __aeabi_fdiv, __aeabi_dtan and __aeabi_ftan or they won't work in interrupts *(probably not used much youd hope), or on an RTOS context switch
 - Refactored code out for the integer and floating point cases
 - Improved the floating point 'tests' in passing to check more return values against GCC implementations
 - Added floating point usage to the IRQ nesting test case
2021-05-13 07:38:42 -05:00

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//===-- aeabi_cdcmpeq.c - Test __aeabi_cdcmpeq ----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tests __aeabi_cdcmpeq for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <pico/double.h>
#include "pico/stdlib.h"
#include "inttypes.h"
extern int __aeabi_dcmpun(double a, double b);
#if __arm__
#include "call_apsr.h"
extern __attribute__((pcs("aapcs"))) void __aeabi_cdcmpeq(double a, double b);
int test__aeabi_cdcmpeq(double a, double b, int expected) {
uint32_t cpsr_value = call_apsr_d(a, b, __aeabi_cdcmpeq);
union cpsr cpsr = {.value = cpsr_value};
if (expected != cpsr.flags.z) {
printf("error in __aeabi_cdcmpeq(%f, %f) => Z = %08x, expected %08x\n",
a, b, cpsr.flags.z, expected);
return 1;
}
return 0;
}
#endif
int test_cdcmpeq() {
#if __arm__
if (test__aeabi_cdcmpeq(1.0, 1.0, 1))
return 1;
if (test__aeabi_cdcmpeq(1234.567, 765.4321, 0))
return 1;
if (test__aeabi_cdcmpeq(-123.0, -678.0, 0))
return 1;
if (test__aeabi_cdcmpeq(0.0, -0.0, 1))
return 1;
if (test__aeabi_cdcmpeq(0.0, 0.0, 1))
return 1;
if (test__aeabi_cdcmpeq(-0.0, -0.0, 1))
return 1;
if (test__aeabi_cdcmpeq(-0.0, 0.0, 1))
return 1;
if (test__aeabi_cdcmpeq(0.0, -1.0, 0))
return 1;
if (test__aeabi_cdcmpeq(-0.0, -1.0, 0))
return 1;
if (test__aeabi_cdcmpeq(-1.0, 0.0, 0))
return 1;
if (test__aeabi_cdcmpeq(-1.0, -0.0, 0))
return 1;
if (test__aeabi_cdcmpeq(1.0, NAN, 0))
return 1;
if (test__aeabi_cdcmpeq(NAN, 1.0, 0))
return 1;
if (test__aeabi_cdcmpeq(NAN, NAN, 0))
return 1;
if (test__aeabi_cdcmpeq(INFINITY, 1.0, 0))
return 1;
if (test__aeabi_cdcmpeq(0.0, INFINITY, 0))
return 1;
if (test__aeabi_cdcmpeq(-INFINITY, 0.0, 0))
return 1;
if (test__aeabi_cdcmpeq(0.0, -INFINITY, 0))
return 1;
if (test__aeabi_cdcmpeq(INFINITY, INFINITY, 1))
return 1;
if (test__aeabi_cdcmpeq(-INFINITY, -INFINITY, 1))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
#if __arm__
extern __attribute__((pcs("aapcs"))) void __aeabi_cdcmple(double a, double b);
extern __attribute__((pcs("aapcs"))) void __aeabi_cdrcmple(double a, double b);
int test_dcmple_gt(double a, double b, int expected) {
if ((a <= b) != expected) {
printf("error in dcmple(%f, %f) => %d, expected %d\n",
a, b, a <= b, expected);
return 1;
}
if ((a > b) == expected && !isnan(a) && !isnan(b)) {
printf("error in dcmpgt(%f, %f) => %d, expected %d\n",
a, b, a > b, !expected);
return 1;
}
return 0;
}
int test_dcmplt_ge(double a, double b, int expected) {
if ((a < b) != expected) {
printf("error in dcmplt(%f, %f) => %d, expected %d\n",
a, b, a < b, expected);
return 1;
}
if ((a >= b) == expected && !isnan(a) && !isnan(b)) {
printf("error in dcmpge(%f, %f) => %d, expected %d\n",
a, b, a >= b, !expected);
return 1;
}
return 0;
}
int test__aeabi_cdcmple(double a, double b, int expected) {
int32_t cpsr_value = call_apsr_d(a, b, __aeabi_cdcmple);
int32_t r_cpsr_value = call_apsr_d(b, a, __aeabi_cdrcmple);
int32_t cpsr_value2 = call_apsr_d(b, a, __aeabi_cdcmple);
int32_t r_cpsr_value2 = call_apsr_d(a, b, __aeabi_cdrcmple);
if (cpsr_value != r_cpsr_value) {
printf("error: __aeabi_cdcmple(%f, %f) != __aeabi_cdrcmple(%f, %f)\n", a, b, b, a);
return 1;
}
int expected_z, expected_c;
if (expected == -1) {
expected_z = 0;
expected_c = 0;
} else if (expected == 0) {
expected_z = 1;
expected_c = 1;
} else {
// a or b is NaN, or a > b
expected_z = 0;
expected_c = 1;
}
#if PICO_DOUBLE_COMPILER
// gcc has this backwards it seems - not a good thing, but I guess it doesn't ever call them
expected_c ^= 1;
#endif
union cpsr cpsr = {.value = cpsr_value};
if (expected_z != cpsr.flags.z || expected_c != cpsr.flags.c) {
printf("error in __aeabi_cdcmple(%f, %f) => (Z = %d, C = %d), expected (Z = %d, C = %d)\n",
a, b, cpsr.flags.z, cpsr.flags.c, expected_z, expected_c);
return 1;
}
cpsr.value = r_cpsr_value;
if (expected_z != cpsr.flags.z || expected_c != cpsr.flags.c) {
printf("error in __aeabi_cfrcmple(%f, %f) => (Z = %d, C = %d), expected (Z = %d, C = %d)\n",
a, b, cpsr.flags.z, cpsr.flags.c, expected_z, expected_c);
return 1;
}
return 0;
}
#endif
int test_cdcmple() {
#if __arm__
if (test__aeabi_cdcmple(1.0, 1.0, 0))
return 1;
if (test__aeabi_cdcmple(1234.567, 765.4321, 1))
return 1;
if (test__aeabi_cdcmple(765.4321, 1234.567, -1))
return 1;
if (test__aeabi_cdcmple(-123.0, -678.0, 1))
return 1;
if (test__aeabi_cdcmple(-678.0, -123.0, -1))
return 1;
if (test__aeabi_cdcmple(-123.0, 678.0, -1))
return 1;
if (test__aeabi_cdcmple(678.0, -123.0, 1))
return 1;
if (test__aeabi_cdcmple(0.0, -0.0, 0))
return 1;
if (test__aeabi_cdcmple(1.0, NAN, 1))
return 1;
if (test__aeabi_cdcmple(NAN, 1.0, 1))
return 1;
if (test__aeabi_cdcmple(NAN, NAN, 1))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
int test_cmple_gt() {
if (test_dcmple_gt(1.0, 1.0, 1))
return 1;
if (test_dcmple_gt(1234.567, 765.4321, 0))
return 1;
if (test_dcmple_gt(765.4321, 1234.567, 1))
return 1;
if (test_dcmple_gt(-123.0, -678.0, 0))
return 1;
if (test_dcmple_gt(-678.0, -123.0, 1))
return 1;
if (test_dcmple_gt(-123.0, 678.0, 1))
return 1;
if (test_dcmple_gt(678.0, -123.0, 0))
return 1;
if (test_dcmple_gt(0.0, -0.0, 1))
return 1;
if (test_dcmple_gt(-0.0, 0.0, 1))
return 1;
if (test_dcmple_gt(1.0, NAN, 0))
return 1;
if (test_dcmple_gt(NAN, 1.0, 0))
return 1;
if (test_dcmple_gt(NAN, NAN, 0))
return 1;
return 0;
}
int test_cmplt_ge() {
if (test_dcmplt_ge(1.0, 1.0, 0))
return 1;
if (test_dcmplt_ge(1234.567, 765.4321, 0))
return 1;
if (test_dcmplt_ge(765.4321, 1234.567, 1))
return 1;
if (test_dcmplt_ge(-123.0, -678.0, 0))
return 1;
if (test_dcmplt_ge(-678.0, -123.0, 1))
return 1;
if (test_dcmplt_ge(-123.0, 678.0, 1))
return 1;
if (test_dcmplt_ge(678.0, -123.0, 0))
return 1;
if (test_dcmplt_ge(0.0, -0.0, 0))
return 1;
if (test_dcmplt_ge(-0.0, 0.0, 0))
return 1;
if (test_dcmplt_ge(1.0, NAN, 0))
return 1;
if (test_dcmplt_ge(NAN, 1.0, 0))
return 1;
if (test_dcmplt_ge(NAN, NAN, 0))
return 1;
return 0;
}
int check_dcmpun(double a, double b, bool expected, bool expect_equal) {
if (__aeabi_dcmpun(a, b) != expected) {
printf("Failed dcmpun(%f, %f)\n", a, b);
return 1;
}
if ((a == b) != expect_equal) {
printf("Failed equality check %f %f\n", a, b);
__breakpoint();
if (b == a) {
printf("SAS\n");
}
return 1;
}
return 0;
}
int test_dcmpun() {
if (check_dcmpun(0, 0, false, true) ||
check_dcmpun(-INFINITY, INFINITY, false, false) ||
check_dcmpun(NAN, 0, true, false) ||
check_dcmpun(0, NAN, true, false) ||
check_dcmpun(NAN, NAN, true, false) ||
check_dcmpun(-NAN, NAN, true, false)) {
return 1;
}
return 0;
}
#define assert_nan(a) assert(isnan(a))
#define check_nan(a) ({ assert_nan(a); a; })
double __aeabi_i2d(int32_t);
double __aeabi_ui2d(int32_t);
double __aeabi_l2d(int64_t);
double __aeabi_ul2d(int64_t);
int32_t __aeabi_d2iz(double);
int64_t __aeabi_d2lz(double);
double __aeabi_dmul(double, double);
double __aeabi_ddiv(double, double);
#if LIB_PICO_DOUBLE_PICO
double __real___aeabi_i2d(int);
double __real___aeabi_ui2d(int);
double __real___aeabi_l2d(int64_t);
double __real___aeabi_ul2d(int64_t);
double __real___aeabi_dmul(double, double);
double __real___aeabi_ddiv(double, double);
int32_t __real___aeabi_d2iz(double);
int64_t __real___aeabi_d2lz(double);
double __real_sqrt(double);
double __real_cos(double);
double __real_sin(double);
double __real_tan(double);
double __real_exp(double);
double __real_log(double);
double __real_atan2(double, double);
double __real_pow(double, double);
double __real_trunc(double);
double __real_ldexp(double, int);
double __real_fmod(double, double);
#define EPSILON 1e-9
#define assert_close(a, b) assert(((b - a) < EPSILON || (a - b) < EPSILON) || (isinf(a) && isinf(b) && (a < 0) == (b < 0)))
#define check1(func,p0) ({ typeof(p0) r = func(p0), r2 = __CONCAT(__real_, func)(p0); assert(r == r2); r; })
#define check2(func,p0,p1) ({ typeof(p0) r = func(p0,p1), r2 = __CONCAT(__real_, func)(p0,p1); assert(r == r2); r; })
#define check_close1(func,p0) ({ typeof(p0) r = func(p0), r2 = __CONCAT(__real_, func)(p0); if (isnan(p0)) assert_nan(r); else assert_close(r, r2); r; })
#define check_close2(func,p0,p1) ({ typeof(p0) r = func(p0,p1), r2 = __CONCAT(__real_, func)(p0,p1); if (isnan(p0) || isnan(p1)) assert_nan(r); else assert_close(r, r2); r; })
#else
#define check1(func,p0) func(p0)
#define check2(func,p0,p1) func(p0,p1)
#define check_close1(func,p0) func(p0)
#define check_close2(func,p0,p1) func(p0,p1)
#endif
double aa = 0.5;
double bb = 1;
int main() {
setup_default_uart();
bool fail = false;
printf("%d\n", aa < bb);
for(double a = -1; a <= 1; a++) {
for(double b = -1; b <= 1; b++) {
printf("%f < %f ? %d\n", a, b, a < b);
}
}
for(double a = -1; a <=1; a++) {
for(double b = -1; b <= 1; b++) {
printf("%f > %f ? %d\n", a, b, a > b);
}
}
#if 1
for (double x = 0; x < 3; x++) {
printf("\n ----- %g\n", x);
printf("SQRT %10.18g\n", check_close1(sqrt, x));
printf("COS %10.18g\n", check_close1(cos, x));
printf("SIN %10.18g\n", check_close1(sin, x));
printf("TAN %10.18g\n", check_close1(tan, x));
printf("ATAN2 %10.18g\n", check_close2(atan2, x, 10.0));
printf("ATAN2 %10.18g\n", check_close2(atan2, 10.0, x));
printf("EXP %10.18g\n", check_close1(exp, x));
printf("LN %10.18g\n", check_close1(log, x));
printf("POW %10.18f\n", check_close2(pow, x, x));
printf("TRUNC %10.18f\n", check_close1(trunc, x));
printf("LDEXP %10.18f\n", check_close2(ldexp, x, x));
printf("FMOD %10.18f\n", check_close2(fmod, x, 3.0f));
double s, c;
sincos(x, &s, &c);
printf("SINCOS %10.18f %10.18f\n", s, c);
if (s != sin(x) || c != cos(x)) {
printf("SINCOS mismatch\n");
fail = true;
}
}
#if PICO_DOUBLE_PROPAGATE_NANS
{
float x = NAN;
printf("SQRT %10.18g\n", check_close1(sqrt, x));
printf("COS %10.18g\n", check_close1(cos, x));
printf("SIN %10.18g\n", check_close1(sin, x));
printf("TAN %10.18g\n", check_close1(tan, x));
printf("ATAN2 %10.18g\n", check_close2(atan2, x, 10.0));
printf("ATAN2 %10.18g\n", check_close2(atan2, 10.0, x));
printf("EXP %10.18g\n", check_close1(exp, x));
printf("LN %10.18g\n", check_close1(log, x));
printf("POW %10.18f\n", check_nan(pow(x, x)));
printf("TRUNC %10.18f\n", check_nan(trunc(x)));
printf("LDEXP %10.18f\n", check_nan(ldexp(x, x)));
printf("FMOD %10.18f\n", check_nan(fmod(x, 3.0f)));
double s, c;
sincos(x, &s, &c);
printf("SINCOS %10.18f %10.18f\n", check_nan(s), check_nan(c));
for(int j=0;j<2;j++) {
for (int i = 1; i < 4; i++) {
char buf[4];
sprintf(buf, "%d", i);
float f0 = -nanf(buf);
double d0 = -nan(buf);
// hmm nanf/nan seem to ignore payload
*(uint64_t *) &d0 |= i;
*(uint32_t *) &f0 |= i;
if (j) {
// try without top bit set
*(uint64_t *) &d0 &= ~0x0008000000000000ull;
*(uint32_t *) &f0 &= ~0x00400000u;
}
float f = (float) d0;
double d = (double) f0;
printf("f2d %f %08"PRIx32" -> %g %016"PRIx64"\n", f0, *(uint32_t *) &f0, d, *(uint64_t *) &d);
printf("d2f %f %016"PRIx64" -> %f %08"PRIx32"\n", d0, *(uint64_t *) &d0, f, *(uint32_t *) &f);
}
}
}
#endif
{
int32_t y;
// for (int32_t x = 0; x>-512; x--) {
// printf("i %d->%f\n", (int)x, (float) x);
// }
for (int32_t x = -1; x; x <<= 1) {
printf("i %d->%f\n", x, (double) x);
check1(__aeabi_i2d, x);
}
for (int32_t x = 1; x; x <<= 1) {
printf("i %d->%f\n", x, (double) x);
check1(__aeabi_i2d, x);
y = x << 1;
}
for (int64_t x = 1; x; x <<= 1) {
printf("i %lld->%f\n", x, (double) x);
check1(__aeabi_l2d, x);
y = x << 1;
}
for (int64_t x = -1; x; x <<= 1) {
printf("i %lld->%f\n", x, (double) x);
check1(__aeabi_l2d, x);
y = x << 1;
}
printf("d %d->%f\n", y, (float) y);
}
{
uint32_t y;
for(uint32_t x = 1; x; x <<= 1) {
printf("u %u->%f\n", x, (double)x);
check1(__aeabi_ui2d, x);
y = x << 1;
}
printf("u %u->%f\n", y, (double)y);
}
for(int64_t x = 1; x !=0; x <<= 1u) {
printf("%lld->%f\n", x, (double)x);
check1(__aeabi_l2d, x);
}
for(double x = -4294967296.f * 4294967296.f * 2.f; x<=-0.5f; x/=2.f) {
printf("d2i64 %f->%lld\n", x, (int64_t)x);
if (x < INT64_MIN) {
// seems like there is a bug in the gcc version!
assert(__aeabi_d2lz(x) == INT64_MIN);
} else {
check1(__aeabi_d2lz, x);
}
}
for(double x = 4294967296.f * 4294967296.f * 2.f; x>=0.5f; x/=2.f) {
printf("d2i64 %f->%lld\n", x, (int64_t)x);
if (x >= INT64_MAX) {
// seems like there is a bug in the gcc version!
assert(__aeabi_d2lz(x) == INT64_MAX);
} else {
check1(__aeabi_d2lz, x);
}
}
for(double x = -4294967296.f * 4294967296.f; x<=-0.5f; x/=2.f) {
printf("d2i32 %f->%d\n", x, (int32_t)x);
check1(__aeabi_d2iz, x);
}
for(double x = 4294967296.f * 4294967296.f; x>=0.5f; x/=2.f) {
printf("d2i32 %f->%d\n", x, (int32_t)x);
check1(__aeabi_d2iz, x);
}
for (double x = 1; x < 11; x += 2) {
double f = x * x;
double g = 1.0 / x;
printf("%g %10.18g %10.18g, %10.18g, %10.18g %10.18g\n", x, f, x + 0.37777777777777777777777777777,
x - 0.377777777777777777777777777777, g, 123456789.0 / x);
check2(__aeabi_dmul, x, x);
check2(__aeabi_ddiv, 1.0, x);
}
if (fail ||
test_cdcmpeq() ||
test_cdcmple() ||
test_dcmpun() ||
test_cmple_gt() ||
test_cmplt_ge()) {
printf("FAILED\n");
return 1;
} else {
printf("PASSED\n");
return 0;
}
#endif
}
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