| /* Tests for _FloatN / _FloatNx types: compile and execution tests for |
| type-generic built-in functions: __builtin_fpclassify. Before |
| including this file, define WIDTH as the value N; define EXT to 1 |
| for _FloatNx and 0 for _FloatN. */ |
| |
| #define __STDC_WANT_IEC_60559_TYPES_EXT__ |
| #include <float.h> |
| |
| #define CONCATX(X, Y) X ## Y |
| #define CONCAT(X, Y) CONCATX (X, Y) |
| #define CONCAT3(X, Y, Z) CONCAT (CONCAT (X, Y), Z) |
| #define CONCAT4(W, X, Y, Z) CONCAT (CONCAT (CONCAT (W, X), Y), Z) |
| |
| #if EXT |
| # define TYPE CONCAT3 (_Float, WIDTH, x) |
| # define CST(C) CONCAT4 (C, f, WIDTH, x) |
| # define MAX CONCAT3 (FLT, WIDTH, X_MAX) |
| # define MIN CONCAT3 (FLT, WIDTH, X_MIN) |
| # define TRUE_MIN CONCAT3 (FLT, WIDTH, X_TRUE_MIN) |
| #else |
| # define TYPE CONCAT (_Float, WIDTH) |
| # define CST(C) CONCAT3 (C, f, WIDTH) |
| # define MAX CONCAT3 (FLT, WIDTH, _MAX) |
| # define MIN CONCAT3 (FLT, WIDTH, _MIN) |
| # define TRUE_MIN CONCAT3 (FLT, WIDTH, _TRUE_MIN) |
| #endif |
| |
| extern void exit (int); |
| extern void abort (void); |
| |
| #define FP_NAN 0 |
| #define FP_INFINITE 1 |
| #define FP_ZERO 2 |
| #define FP_SUBNORMAL 3 |
| #define FP_NORMAL 4 |
| |
| #define fpclassify(X) __builtin_fpclassify (FP_NAN, FP_INFINITE, \ |
| FP_NORMAL, FP_SUBNORMAL, \ |
| FP_ZERO, (X)) |
| |
| volatile TYPE inf = __builtin_inf (), nanval = __builtin_nan (""); |
| volatile TYPE neginf = -__builtin_inf (), negnanval = -__builtin_nan (""); |
| volatile TYPE zero = CST (0.0), negzero = -CST (0.0), one = CST (1.0); |
| volatile TYPE max = MAX, negmax = -MAX, min = MIN, negmin = -MIN; |
| volatile TYPE true_min = TRUE_MIN, negtrue_min = -TRUE_MIN; |
| |
| /* Allow for any optimizations of comparisons involving the result of |
| fpclassify by also testing case where result is stored in a |
| volatile variable and so the comparison cannot be optimized. */ |
| #define CHECK_FPCLASSIFY(VAL, EXP) \ |
| do \ |
| { \ |
| volatile int c; \ |
| if (fpclassify (VAL) != (EXP)) \ |
| abort (); \ |
| c = fpclassify (VAL); \ |
| if (c != (EXP)) \ |
| abort (); \ |
| } \ |
| while (0) |
| |
| int |
| main (void) |
| { |
| CHECK_FPCLASSIFY (inf, FP_INFINITE); |
| CHECK_FPCLASSIFY (neginf, FP_INFINITE); |
| CHECK_FPCLASSIFY (nanval, FP_NAN); |
| CHECK_FPCLASSIFY (negnanval, FP_NAN); |
| CHECK_FPCLASSIFY (zero, FP_ZERO); |
| CHECK_FPCLASSIFY (negzero, FP_ZERO); |
| CHECK_FPCLASSIFY (one, FP_NORMAL); |
| CHECK_FPCLASSIFY (max, FP_NORMAL); |
| CHECK_FPCLASSIFY (negmax, FP_NORMAL); |
| CHECK_FPCLASSIFY (min, FP_NORMAL); |
| CHECK_FPCLASSIFY (negmin, FP_NORMAL); |
| CHECK_FPCLASSIFY (true_min, FP_SUBNORMAL); |
| CHECK_FPCLASSIFY (negtrue_min, FP_SUBNORMAL); |
| exit (0); |
| } |