more minor test fixups to pass on all platforms

diff --git a/test/pico_float_test/pico_double_test.c b/test/pico_float_test/pico_double_test.c
index a0959fe..459a4bd 100644
--- a/test/pico_float_test/pico_double_test.c
+++ b/test/pico_float_test/pico_double_test.c

@@ -329,7 +329,7 @@
 
 #define FRAC ((double)(1ull << 50))
 #define allowed_range(a) (fabs(a) / FRAC)
-#define assert_close(a, b) test_assert((fabs(a - b) <= allowed_range(a) || ({ printf("  error: %f != %f\n", a, b); 0; })) || (isinf(a) && isinf(b) && (a < 0) == (b < 0)))
+#define assert_close(a, b) test_assert((fabs((a) - (b)) <= allowed_range(a) || ({ printf("  error: %f != %f\n", a, b); 0; })) || (isinf(a) && isinf(b) && ((a) < 0) == ((b) < 0)))
 #define check1(func,p0) ({ typeof(p0) r = func(p0), r2 = __CONCAT(__real_, func)(p0); test_assert(r == r2); r; })
 #define check2(func,p0,p1) ({ typeof(p0) r = func(p0,p1), r2 = __CONCAT(__real_, func)(p0,p1); test_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; })
@@ -367,7 +367,7 @@
     for (double x = 0; x < 3; x++) {
         printf("\n ----- %g\n", x);
         printf("SQRT %10.18g\n", check_close1(sqrt, x));
-#if PICO_RP2350 && !LIB_PICO_DOUBLE_COMPILER
+#if PICO_DOUBLE_HAS_SQRT_FAST
         printf("SQRT_FAST %10.18g\n", check_close1(sqrt_fast, x));
 #endif
         printf("COS %10.18g\n", check_close1(cos, x));
@@ -442,10 +442,9 @@
     for (double a = -100.0; a < 100.0; a += 53.103) {
         for (double b = -2000000.0; b < 1000000.0; b += 397243.5) {
             for (double c = -700.0; c < 1000.0; c += 287.4) {
-                printf("fma %f %f %f\n", a, b, c);
-                check_close3(fma, a, b, c);
-#if PICO_RP2350 && !LIB_PICO_DOUBLE_COMPILER
-                check_close3(fma_fast, a, b, c);
+                printf("FMA %f\n", check_close3(fma, a, b, c));
+#if PICO_DOUBLE_HAS_FMA_FAST
+                printf("FMAFAST %f\n", check_close3(fma, a, b, c));
 #endif
             }
         }
@@ -531,7 +530,7 @@
                x - 0.377777777777777777777777777777, g, 123456789.0 / x);
         check2(__aeabi_dmul, x, x);
         check2(__aeabi_ddiv, 1.0, x);
-#if PICO_RP2350 && !LIB_PICO_DOUBLE_COMPILER
+#if PICO_DOUBLE_HAS_DDIV_FAST
         check2(ddiv_fast, 1.0, x);
 #endif
     }

diff --git a/test/pico_float_test/pico_float_test.c b/test/pico_float_test/pico_float_test.c
index 5296a79..c38cec9 100644
--- a/test/pico_float_test/pico_float_test.c
+++ b/test/pico_float_test/pico_float_test.c

@@ -311,7 +311,7 @@
 int64_t __attribute__((pcs("aapcs"))) __aeabi_f2lz(float);
 float __attribute__((pcs("aapcs"))) __aeabi_fmul(float, float);
 float __attribute__((pcs("aapcs"))) __aeabi_fdiv(float, float);
-#if LIB_PICO_FLOAT_PICO
+#if !LIB_PICO_FLOAT_COMPILER
 #if !LIB_PICO_FLOAT_PICO_VFP
 float __attribute__((pcs("aapcs"))) __real___aeabi_i2f(int);
 float __attribute__((pcs("aapcs"))) __real___aeabi_ui2f(int);
@@ -321,9 +321,9 @@
 float __attribute__((pcs("aapcs"))) __real___aeabi_fdiv(float, float);
 int32_t __attribute__((pcs("aapcs"))) __real___aeabi_f2iz(float);
 int64_t __attribute__((pcs("aapcs"))) __real___aeabi_f2lz(float);
+#endif
 float __real_sqrtf(float);
 float __real_fmaf(float, float, float);
-#endif
 float __real_cosf(float);
 float __real_sinf(float);
 float __real_tanf(float);
@@ -421,6 +421,7 @@
 #if 1
     for (float x = 0; x < 3; x++) {
         printf("\n ----- %f\n", x);
+        // not replaced in this version
 #if !LIB_PICO_FLOAT_PICO_VFP
         printf("FSQRT %10.18f\n", check_close1(sqrtf, x));
 #endif
@@ -435,9 +436,8 @@
         printf("FEXP %10.18f\n", check_close1(expf, x));
         printf("FLN %10.18f\n", check_close1(logf, x));
         printf("POWF %10.18f\n", check_close2(powf, x, x));
-        // todo clang why does this not compile?
-#ifndef __clang__
-        printf("TRUNCF %10.18f\n", check_close1(truncf, x));
+#if !(__clang__ && __PICOLIBC__) // seems to be a buf with wrapping the extern inline trunc
+        printf("TRUNCF %10.18f\n", check1(truncf, x));
 #endif
         printf("LDEXPF %10.18f\n", check_close2(ldexpf, x, x));
         printf("FMODF %10.18f\n", check_close2(fmodf, x, 3.0f));
@@ -561,17 +561,17 @@
     }
     for(float x = 4294967296.f * 4294967296.f * 2.f; x>=0.5f; x/=2.f) {
         printf("f2i64 %f->%lld\n", x, (int64_t)x);
-#if PICO_RP2040
         if ((double)x >= (double)INT64_MAX) {
 #if TEST_SATURATION
             test_assert(__aeabi_f2lz(x) == INT64_MAX);
 #endif
         } else {
+#if PICO_RP2040
             check1(__aeabi_f2lz, x);
-        }
 #else
-        check1_vfp_unwrapped(__aeabi_f2lz, x);
+            check1_vfp_unwrapped(__aeabi_f2lz, x);
 #endif
+        }
     }
     for(float x = -4294967296.f * 4294967296.f; x<=-0.5f; x/=2.f) {
         printf("f2i32 %f->%d\n", x, (int32_t)x);
@@ -579,17 +579,17 @@
     }
     for(float x = 4294967296.f * 4294967296.f; x>=0.5f; x/=2.f) {
         printf("f2i32 %f->%d\n", x, (int32_t)x);
-#if PICO_RP2040
         if ((double)x >= (double)INT32_MAX) {
 #if TEST_SATURATION
             test_assert(__aeabi_f2iz(x) == INT32_MAX);
 #endif
         } else {
+#if PICO_RP2040
             check1(__aeabi_f2iz, x);
-        }
 #else
-        check1_vfp_unwrapped(__aeabi_f2iz, x);
+            check1_vfp_unwrapped(__aeabi_f2iz, x);
 #endif
+        }
     }
 
     for (float x = 1; x < 11; x += 2) {