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 /* Test complex arithmetic with signed zeros. Pure complex multiplication with -1.0 + 0.0i. */ /* { dg-do run } */ /* { dg-options "-std=gnu99" { target c } } */ #include "complex-sign.h" #define CHECK_MUL_INT(TYPE, COPY, ZERO, ZEROI, ONE, S1, S2, SR, SI) \ do { \ _Complex TYPE a1, b1, c1; \ volatile _Complex TYPE a2, b2, c2; \ a1 = ENCODE(ZERO, ZEROI, S1, S2); \ CHECK_RES (a1, COPY, S1, S2); \ b1 = -ONE + ZEROI; \ c1 = a1 * b1; \ CHECK_RES (c1, COPY, SR, SI); \ c1 = a1 * (-ONE + ZEROI); \ CHECK_RES (c1, COPY, SR, SI); \ a2 = ENCODE(ZERO, ZEROI, S1, S2); \ CHECK_RES (a2, COPY, S1, S2); \ b2 = -ONE + ZEROI; \ c2 = a2 * b2; \ CHECK_RES (c2, COPY, SR, SI); \ c2 = a2 * (-ONE + ZEROI); \ CHECK_RES (c2, COPY, SR, SI); \ } while (0) #define CHECK_MUL(TYPE, COPY, ZERO, ZEROI, ONE) \ do { \ CHECK_MUL_INT (TYPE, COPY, ZERO, ZEROI, ONE, +, +, -, +); \ CHECK_MUL_INT (TYPE, COPY, ZERO, ZEROI, ONE, +, -, +, +); \ CHECK_MUL_INT (TYPE, COPY, ZERO, ZEROI, ONE, -, +, +, -); \ CHECK_MUL_INT (TYPE, COPY, ZERO, ZEROI, ONE, -, -, +, +); \ } while (0) void check_mul_float (void) { CHECK_MUL (float, __builtin_copysignf, 0.0f, 0.0if, 1.0f); } void check_mul_double (void) { CHECK_MUL (double, __builtin_copysign, 0.0, 0.0i, 1.0); } void check_mul_long_double (void) { CHECK_MUL (long double, __builtin_copysignl, 0.0l, 0.0il, 1.0l); } int main (void) { check_mul_float (); check_mul_double (); check_mul_long_double (); exit (0); }