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 31080-f9bc4fce97) Lines: 91.2 % 814 742 Test Date: 2026-07-30 17:02:59 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	45558
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	87441
ZX_Z_add_shallow	95023
ZX_remi2n	106094
ZX_max_lg	109375
QX_sqr	110827
ZX_Z_sub	161616
ZXM_eval2BIL	177100
ZXM_expi	177100
ZC_mod2BIL_FqC	305402
ZX_val	346900
RgX_check_QX	369818
ZX_Z_eval	524927
ZX_neg	599446
ZX_affine	690868
ZX_divuexact	977809
ZXC_eval2BIL	1092747
ZXC_expi	1092747
Z_mod2BIL_Fq	1199133
ZX_mod_Xnm1	1737297
Kronecker_to_ZXX	1782707
QX_ZX_rem	1902116
ZX_equal	2582294
ZXn_mul	2600127
Z_ZX_sub	2740702
RgX_check_ZX	2979587
ZXX_mul_Kronecker	3053239
QX_mul	3814400
ZX_Z_translate_basecase	3906644
ZX_Z_translate	4000425
ZX_Z_divexact	5147488
ZX_eval2BIL	5557926
ZX_expi	5557926
ZX_copy	5943380
ZX_shifti	6526458
RgXX_to_Kronecker	6756457
ZX_deriv	7945126
RgXX_to_Kronecker_spec	10024415
ZX_rem	11658499
ZX_Z_mul	15034099
ZX_sqrspec_sqri	18041688
ZX_sub	29580259
ZX_valrem	31526569
ZX_mulspec_mulii	38195030
ZX_add	39093531
Z_sqrshiftspec_ZX	43736877
Z_ZX_mulshiftspec	48371218
Z_mod2BIL_ZX	57501189
ZX_sqrspec_basecase	76692728
ZX_eval2BILspec	95736519
ZX_mul	115758538
ZX_mulspec	124216054
ZX_sqr	139290693
ZX_sqrspec	139290693
ZX_expispec	172429247
ZX_sqrspec_basecase_limb	316728930
ZXX_renormalize	317512896
ZX_valspec	336976471

Generated by: LCOV version 2.0-1