Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - ZX.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31057-89c4d54ba6) Lines: 91.2 % 814 742 Test Date: 2026-07-25 17:02:42 Functions: 92.5 % 107 99 Legend: Lines:     hit not hit

Function Name	Hit count
ZXV_ZX_fromdigits	0
ZXV_remi2n	0
ZXX_Z_add_shallow	0
ZX_rescale2n	0
ZX_rescale_lt	0
Z_XpN_powu	0
_ZX_add	0
_ZX_mul	0
QXQM_sqr	7
ZX_div_by_X_1	21
ZXV_equal	28
zx_z_divexact	112
ZXQM_sqr	140
_ZX_sqr	266
Xpm1_powu	434
QXQX_powers	476
ZX_digits	518
_ZX_divrem	735
ZXX_shifti	826
RgX_check_ZXX	1022
ZXn_sqr	1575
QXQX_sqr	1904
ZXQX_sqr	1904
RgXX_to_Kronecker_var	3164
QXQX_QXQ_mul	3465
ZX_eval1	4732
QXQM_mul	5124
ZXX_sqr_Kronecker	5306
ZXX_max_lg	5599
ZXQM_mul	6629
ZM_mod2BIL_ZXQM	6769
ZXV_Z_mul	7476
ZXX_evalx0	7877
ZXX_Z_mul	8883
ZXQX_ZXQ_mul	8988
QXQX_mul	13377
ZC_mod2BIL_ZXQC	14896
ZX_mulu	17045
zx_to_ZX	20923
ZXQX_mul	22365
scalar_ZX_shallow	22897
Kronecker_to_ZXQX	24269
ZX_rescale	36311
ZXT_remi2n	45054
scalar_ZX	55393
ZXX_Z_divexact	56469
Z_mod2BIL_ZXQ	65338
ZXV_dotproduct	74242
FqM_mul_Kronecker	81851
ZM_mod2BIL_FqM	81851
ZX_Z_add	87175
ZX_Z_add_shallow	95009
ZX_remi2n	105422
ZX_max_lg	109375
QX_sqr	110762
ZX_Z_sub	161612
ZXM_eval2BIL	177100
ZXM_expi	177100
ZC_mod2BIL_FqC	305402
ZX_val	346900
RgX_check_QX	369821
ZX_Z_eval	524927
ZX_neg	599430
ZX_affine	690868
ZX_divuexact	977809
ZXC_eval2BIL	1092747
ZXC_expi	1092747
Z_mod2BIL_Fq	1199133
ZX_mod_Xnm1	1737297
Kronecker_to_ZXX	1782719
QX_ZX_rem	1902137
ZX_equal	2582252
ZXn_mul	2600127
Z_ZX_sub	2740745
RgX_check_ZX	2979481
ZXX_mul_Kronecker	3053260
QX_mul	3814400
ZX_Z_translate_basecase	3906605
ZX_Z_translate	4000388
ZX_Z_divexact	5147299
ZX_eval2BIL	5557926
ZX_expi	5557926
ZX_copy	5943317
ZX_shifti	6524852
RgXX_to_Kronecker	6756499
ZX_deriv	7944944
RgXX_to_Kronecker_spec	10024479
ZX_rem	11657676
ZX_Z_mul	15033932
ZX_sqrspec_sqri	18041405
ZX_sub	29576676
ZX_valrem	31526059
ZX_mulspec_mulii	38193844
ZX_add	39090443
Z_sqrshiftspec_ZX	43735141
Z_ZX_mulshiftspec	48370573
Z_mod2BIL_ZX	57499720
ZX_sqrspec_basecase	76690240
ZX_eval2BILspec	95733864
ZX_mul	115757380
ZX_mulspec	124214068
ZX_sqr	139286211
ZX_sqrspec	139286211
ZX_expispec	172424104
ZX_sqrspec_basecase_limb	316722034
ZXX_renormalize	317501543
ZX_valspec	336968074

Generated by: LCOV version 2.0-1